X-linked recessive and autosomal recessive inheritance patterns are potential mechanisms of inheritance for the condition seen in the pedigree.
It's likely that the feature in question in this pedigree was inherited via an X-linked recessive or autosomal recessive mechanism.
An individual needs two mutant alleles and no normal allele in order to manifest an autosomal recessive trait. This can happen in one of three ways: if two unaffected carriers mate, there is a 25% chance that the result will be an affected child; if a carrier mates with an affected person, there is a 50% chance that the result will be an affected child; or if two affected people mate, there is a 100% chance that the result will be an affected child.
Males with an X-linked recessive mutation will exhibit that trait, however females must be homozygous for the mutation to exhibit the phenotype. 50% of daughters and 50% of boys will be impacted if an afflicted man mates with a carrier female.
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cells surrounding stomata that, through osmosis, regulate the openings and closings of the stomata
which statement is accurate about evolution? responses mutations are always harmful. mutations are always harmful. evolution means that a population never has changes in its genetic frequencies. evolution means that a population never has changes in its genetic frequencies. natural selection only eliminates odd individuals. natural selection only eliminates odd individuals. evolution means that a population undergoes changes in its gene frequencies over time.
statement accurate about evolution is evolution means that a population undergoes changes in its gene frequencies over time.
The rate at which a specific allele appears in a population is referred to as its allele frequency (or gene frequency). We've talked about evolution as a change in the characteristics of a population of organisms, but genetic change lies behind that phenotypic change. The term evolution is defined in population genetics as a change in the frequency of an allele in a population. The frequency of one of the alleles, IA, in the ABO blood type system is the number of copies of that allele divided by the total number of copies of the ABO gene in the population.
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Your answer:
evolution means that a population never has changes in its genetic frequencies.
i literally just took this test and I can verify that the answer from the other person is correct! If you are still unsure, I shall take a screenshot to confirm. As a k12 user, i hope this helps!
Im a simple reflex action, chemicals are released at two synapses: one between a sensory neurone and a ____ neurone, and one between a ____ neurone and a motor neurone. What one word completes both gaps?
Answer:
Explanation:don't
In a simple reflex action, chemicals are released at two synapses, one between a sensory neuron and a relay neuron, and one between a relay neuron and a motor neuron.
What is a simple reflex action?A simple reflex action is a rapid, automatic response to a stimulus that occurs without conscious thought or decision-making. It involves the transmission of nerve impulses through a reflex arc connecting a sensory receptor to an effector, such as a muscle.
The reflex arc consists of a sensory neuron, a relay neuron, and a motor neuron. When a sensory receptor detected a stimulus, the sensory neuron is activated. The sensory neuron at the first synapse releases neurotransmitters that bind to receptors on the dendrites of a relay neuron. The relay neuron is located entirely within the central nervous system and connects the sensory and motor neurons.
Once the relay neuron receives the nerve impulse, a signal is sent to the motor neuron and if the stimulus is strong enough, neurotransmitters are also released at the second synapse by the relay neuron, between the relay neuron and the motor neuron.
Therefore, chemicals are released at two synapses, one between a sensory neuron and a relay neuron, and one between a relay neuron and a motor neuron.
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you extract a dna sample from a crime scene. the genotype is 100/80 at the d16s539 locus and 70/93 at th01. a) you have a suspect in custody. assuming this suspect is innocent and of european ancestry, what is the probability that their genotype would match this profile by chance (a falsematch probability)? b) the fbi uses 13 markers. wh
A)The overall false match probability is the product of the two false match probabilities, or 0.08 * 0.00651 = 0.000504.
The false match probability of a single locus is calculated by multiplying the frequency of one allele by the frequency of the other allele. For the first locus, D16S539, the frequencies of the two alleles are 0.100 and 0.80, respectively.
The false match probability is 0.100 * 0.80 = 0.08. For the second locus, TH01, the frequencies of the two alleles are 0.070 and 0.093, respectively.
The false match probability is 0.070 * 0.093 = 0.00651. The overall false match probability is the product of the two false match probabilities, or 0.08 * 0.00651 = 0.000504.
B) The false match probability of 13 loci is calculated by multiplying the false match probabilities of each locus. In this case, the false match probability is 0.000504^13, or 4.18x10^-17.
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Complete question is attached below.
how does the third line of defense defeat staphylococcus
detailed answer pls its for a project
PLS HELP MEEE
Answer:
below the full answer
Explanation:
The third line of defense, also known as the adaptive immune response, involves the activation of specific immune cells, such as T and B lymphocytes, to target and eliminate specific pathogens, such as Staphylococcus.
When a pathogen, such as Staphylococcus, enters the body, it is recognized by the innate immune system, which triggers the activation of T and B lymphocytes. T lymphocytes, also known as T cells, can be divided into two main subtypes: CD4+ T cells and CD8+ T cells. CD4+ T cells, also known as helper T cells, help to coordinate the immune response by releasing chemicals called cytokines that help to attract other immune cells to the site of infection. CD8+ T cells, also known as cytotoxic T cells, directly target and kill infected cells.
B lymphocytes, also known as B cells, produce and release antibodies that can specifically bind to and neutralize the pathogen. Once a B cell encounters a pathogen, it produces a large number of identical copies of itself, known as plasma cells, that produce the specific antibody that can neutralize the pathogen.
Both T and B cells also have memory cells that remember the pathogen, so that they can respond quickly if the same pathogen enters the body again in the future.
So in summary, the third line of defense involves the activation of specific immune cells, such as T and B lymphocytes, which target and eliminate specific pathogens like Staphylococcus by releasing chemicals and neutralizing the pathogen.
in which lobe of the brain can you find the visual cortex?
Processing visual information is mostly carried out by the occipital lobe. The primary and association visual cortex are present there.
The region of the brain that processes vision is called the occipital lobe. Visuospatial processing, distance and depth perception, colour perception, object and face identification, and memory formation are all related to it.One of the four major cerebral cortex lobes in the mammalian brain is the occipital lobe. The name, which comes from the Latin words ob, meaning "behind," and caput, meaning "head," is a result of where it is located on the head.
The majority of the anatomical region of the visual cortex is found in the occipital lobe, which is the visual processing hub of the mammalian brain.
Brodmann area 17, also referred to as V1, is the main visual cortex (visual one). Human V1 is situated on the medial side of the occipital lobe, within the calcarine sulcus; its whole extent frequently extends onto the occipital pole. Because of a prominent myelin stripe, the Stria of Gennari, which marks it, V1 is frequently referred to as the striate cortex.
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Watch this short ted talk (its like 6-8 minutes long) and answer the following questions to it (link for it is in the image)
How did Braitman become interested in mental illness in animals?
Why is it not totally surprising that animals can suffer from emotional distress or mental illness?
The video discusses giving animals human medications like anti-anxiety or anti-depression drugs. Do you think animals should be treated with drugs used for mental illness? Why or why not?
Briefly describe at least two of the disorders that Braitman explains animals can suffer from.
Why do veterinarians often ask about an animal’s behaviors and life during an office visit?
Why does Braitman say that we owe our entire psychopharmaceutical arsenal to animals? Explain.
How could thinking about an animal’s mental health influence veterinary care?
1. Braitman become interested in mental illness in animals as she adopted a Bernese mountain dog with mental health problems
2. Because the animal brain works a lot like the human and we have emotional distress and mental interest
3. I think they should as long as you can make sure how to keep them from being addicted and are safe for the animal
4. Ptsd, Post-Traumatic Stress Disorder and plucking, excessive grooming
5. Because they could have problems with the animal at home or if they are staying at the hospital and they want to know what you've done to help them.
6. Because it will help other animals or humans with their own problems
What is mental illness?A wide variety of mental health conditions—disorders that affect your mood, thinking, and behavior—are referred to as mental illnesses, also known as mental health disorders. Depression, anxiety disorders, schizophrenia, eating disorders, and compulsive behaviors are a few examples of mental illnesses.
A clinically significant disturbance in a person's cognition, emotional control, or behavior is a sign of a mental disorder.
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which of the following diseases has been successfully eradicated worldwide through vaccination efforts?
O Polio O tetanusO SmallpoxO Rubella
Smallpox has been successfully eradicated worldwide through vaccination efforts.
Smallpox is a highly contagious and deadly disease caused by the Variola virus. It was responsible for millions of deaths throughout history, with outbreaks occurring as recently as the 20th century.
In 1967, the World Health Organization (WHO) launched a global campaign to eradicate smallpox through mass vaccination. This campaign was successful due to several factors, including the high efficacy of the smallpox vaccine, the ability to diagnose and contain outbreaks quickly, and the use of surveillance and ring vaccination strategies.
By 1980, smallpox had been eradicated from the entire world, making it the first and only human disease to be eradicated through human efforts. This achievement was a major milestone in public health, and it serves as a model for other disease eradication efforts. The success of smallpox eradication also demonstrated the power of international cooperation in achieving a global public health goal.
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Part D - Chloroplast structure and function
In eukaryotes, all the reactions of photosynthesis occur in various membranes and compartments of the chloroplast.
Identify the membranes or compartments of the chloroplast by dragging the blue labels to the blue targets.
Then, identify where the light reactions and Calvin cycle occur by dragging the pink labels to the pink targets.
Note that only blue labels should be placed in blue targets, and only pink labels should be placed in pink targets.
The chloroplast is a unique organelle found in eukaryotic photosynthetic cells. It is a double-membrane bound organelle, consisting of an inner and outer membrane.
The inner membrane surrounds the stroma, which is the fluid-filled region of the chloroplast where the Calvin cycle takes place. The stroma contains the enzymes and other molecules needed for the light-independent reactions of photosynthesis.
The thylakoids are stacked, flattened, membranous structures located in the stroma of the chloroplast, where light reactions occur. The light-dependent reactions of photosynthesis take place in the thylakoid membrane, specifically in the thylakoid lumen.
Light energy is absorbed by pigments such as chlorophyll and converted into chemical energy in the form of ATP and NADPH. The light-independent reactions, also known as the Calvin cycle, take place in the stroma of the chloroplast. In this phase, CO2 is fixed by the enzyme RuBisCO into glucose and other sugars using the energy from ATP and NADPH generated in the light-dependent reactions.
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Complete the Concept Map to identify pathways of nutrient digestion.Drag the appropriate labels to their respective targets.ResetHelpproteinsproteinscarbohydratescarbohydratesfats (triglycerides)fats (triglycerides)amino acidsamino acidsmonosaccharidesmonosaccharidesglycerol moleculesglycerol moleculesfatty acidsfatty acidsthe glycolytic pathwaythe glycolytic pathwaythe formation of acetyl CoAthe formation of acetyl CoAthe Krebs cyclethe Krebs cycleoxidative phosphorylation and ATP synthesisoxidative phosphorylation and ATP synthesis
A glycerol- and three fatty acid-based ester [1] Excess fat in amphibians and people, as well as plant and animal fat, is primarily composed of triglycerides.
Glucose is the most frequent monosaccharide. Monosaccharide, mannose, fructose, and midine all have significant biological significance.
Pyruvate is a consequence of glycolysis that is produced in the cell's cytoplasm from many sources and is ultimately destined to be carried into organelles where it will serve as the main fuel source.
Describe Ester?A chemical molecule known as an ester is one that has at least one -OH hydroxyl group replaced by a -O- alkyl (alkoxy) group. Ester is generated from an acid, either organic or inorganic.
Describe a glucose?A kind of sugar that serves as the main fuel for living things.
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Fossil fuels form in prehistoric
Fossil fuels formed in the prehistoric period of the earth's planet called the Carboniferous Period, approx 280 to 360 million years ago.
What is the Carboniferous Period of the earth's planet?The Carboniferous Period of the earth planet is a geological period that occurred approx 280 to 360 million years ago, in which dead animals and plants fossilized remained in the soil to be compacted and thus formed all types of fossil fuel we use today such as coal, natural gas, derived gases, oil, petroleum and any they of non-living fossilized waste. This period (carboniferous period) of part of the late Paleozoic era, which is a geological era.
Therefore, with this data, we can see that natural gas, derived gases, and oil are all types of fossil fuels generated from dead plants and animals that lived in the Carboniferous period of the earth's planet.
Complete question:
Fill in the blank with the missing part of the sentence. Fossil fuels form in prehistoric ____.
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a population of snakes includes solid-colored snakes and banded (striped) snakes. on the mainland, the snakes are mostly solid. on a nearby island, the snakes are mostly banded. you hypothesize that the reason for this observation is that the environments on the mainland and island are different, and banded snakes are favored in the island environment. which of the answer choices are possible alternative hypotheses to explain why the snakes on the island are mostly banded? select all that apply. all of the answer options are correct. the environments on the mainland and island are different, and banded snakes are favored on the mainland. there is a predator on the island that preferentially preys on solid snakes. the island was colonized by just a few snakes from the mainland, and those snakes were banded.
The potential alternate hypotheses based on Migration-Selection Equilibrium are options A and C.
Option A: On the island, there is a predator who prefers to prey on solid snakes. This is a potential alternative explanation since solid colours might be "non-cryptic" and prey on predators. Solid quality could be deadly on an island.
Option B: The environments on the mainland and the island are different, with the mainland favouring banded snakes. This is untrue because the island is home to numerous and preferred banded snakes.
Option C: Only a small number of banded snakes from the mainland colonised the island. The opposite alternative theory states that a new population of numerous banded snakes was started by a small number of banded snakes that showed migration to island.
Option D: Each and every one of these is accurate.
Option A and C are the proper choices.
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In garden peas, tall (T) vine is dominant over short (t) vine, and round pea pod (R) is dominant over wrinkled pea pod (r). Cross a homozygous tall, round pea plant with a homozygous short, wrinkled pea plant. Show the genotypes and phenotypes of the F1 offspring and the probability of each.
The genotypes and phenotypes of the F1 offspring is TtRr and Tall round respectively and the probability of each is 1.
Dominant allele : Allele which is capable of expressing itself in presence of alternative allele ( recessive allele). And supress expression of alternative allele ( recessive allele). For example For height of plant two alleles are there : T express tall phenotype and t express short phenotype.
T allele is dominant as it is capable of expression even in presence of t and express tall height. See in this example Tt : tall, TT : tall Recessive allele : Allele which is not capable of expressing itself in presence of alternative allele. Tt will express tall height because alternative allele T is present which will supress expression of t.
Only express in absence of alternative allele. for example : tt give rise to short height. Homozygous parent : both alleles in pair are of same category means either both recessive or both dominant. For example: Homozygous Alleles pair for height : TT, tt
Heterozygous parent : Parent in which allele pair have both alleles of different category means one is dominant and other is recessive. For example : Heterozygous allele pair for height : Tt
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about how much risk of substance use disorder is related to genetics?
Although estimates of heritability (h2) for SUDs vary, they generally imply that genetic factors contribute to about 50% of the risk.
How well genetic variations in humans account for variations in their attributes is determined by their heritability. In addition to mental illnesses like schizophrenia and autism spectrum disorder, traits can also include physical qualities like height, eye colour, and IQ. How much of the variation in a given trait may be attributed to genetic variation is known as heritability, which is a statistical concept (represented by the symbol h2) in science. An estimate of a trait's heritability pertains to a single population in a single environment, and it can alter over time as conditions change.
Between 0 and 1 heritability estimates are given. With a heritability close to zero, a trait's variability among individuals is virtually entirely explained by environmental circumstances, with very little genetic effect.
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Explain how a sponge gets its food and how all the sponge cells get their nutrients.
This is not multiple choice.
Answer:
see full answer in below
Explanation:
Sponges are sessile, which means they are affixed to a substrate and do not move. By filter-feeding, which entails pulling water into small holes on their surface called ostia and pushing it out through bigger apertures called oscula, they obtain their food. The water is then filtered via a system of tiny chambers and tubes lined with choanocyte cells, which have flagella that beat to produce a current.
Small particles like plankton, bacteria, and dissolved nutrients are caught and absorbed by the choanocytes as the water passes through the sponge, where they are digested. After that, the nutrients are dispersed throughout the sponge through diffusion, which is the transfer of molecules from a high-concentration location to a low-concentration area, and by water circulation inside the sponge.
Through water diffusion and circulation, which transports the broken-down food particles to all areas of the sponge, all of the sponge cells receive their nutrition. The nutrients from the moving water may be immediately absorbed by the cells lining the canals and chambers. However, diffusion is how the cells in the sponge's deeper layers obtain their nourishment. Because of the efficient circulation of water and nutrients throughout the sponge, sponges are frequently found in places with strong water flow.
Which of the following could cause DNA from the main chromosome of a donor cell to be incorporated into the main chromosome of the recipient cell?
a. conjugation between an Hfr cell and an F- cell
b. conjugation between two F+ cells
c. conjugation between two F- cells
d. conjugation between an F+ cell and an F- cell
All of the following processes could cause DNA from the main chromosome of a donor cell to be incorporated into the main chromosome of the recipient cell: conjugation between an Hfr cell and an F- cell, conjugation between two F+ cells, conjugation between two F- cells, and conjugation between an F+ cell and an F- cell.
In the case of conjugation between an Hfr cell and an F- cell, the donor cell (Hfr) has a main chromosome that carries a large number of genes. During conjugation, DNA from the main chromosome of the donor cell is transferred to the recipient cell (F-). This process can be facilitated by the presence of a plasmid in the donor cell, which acts as a bridge between the two cells. This bridge allows the transfer of genetic material from the donor cell to the recipient cell. As a result, DNA from the main chromosome of the donor cell is incorporated into the main chromosome of the recipient cell.
Conjugation between two F+ cells is also possible and can result in the transfer of genetic material from one cell to the other. This is done through the presence of a plasmid that acts as a bridge between the two cells. This bridge allows the transfer of genetic material from the donor cell to the recipient cell. As a result, DNA from the main chromosome of the donor cell is incorporated into the main chromosome of the recipient cell.
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true/false. In glycolysis, as in all the stages of cellular respiration, the transfer of electrons from electron donors to electron acceptors plays a critical role in the overall conversion of the energy in foods to energy in ATP. These reactions involving electron transfers are known as oxidation-reduction, or redox, reactions.
Answer:
True. In glycolysis, as in all the stages of cellular respiration, the transfer of electrons from electron donors to electron acceptors plays a critical role in the overall conversion of the energy in foods to energy in ATP. These reactions involving electron transfers are known as oxidation-reduction, or redox, reactions.
It can reasonably be inferred from Passage 1 that, for most bird species, there is a certain size at which they a. are unable to fly.
b. require less energy when flying.
c. are more likely to attack other animals.
d. do have a to compete with other birds for food.
Answer:
Expert-Verified Answer
3 people found it helpful
JackelineCasarez
The inference can be made that majority of the bird species, there exists a particular size at which:
a). are unable to fly.
Bird Species
As per Passage 1, the author offers descriptions regarding the various constraints that affect the flight of the birds.
The demonstration of certain birds in New Zealand having bigger wingspans leads them to be flightless.
Therefore, to an extent, the size impacts the flight of the birds and they cannot fly.
Thus, option a is the correct answer.
an osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only.
True. An osteon is a structural component of compact bone that includes mature bone cells called osteocytes, thin layers of bone matrix called lamellae, and a central canal filled with blood vessels and nerves.
What is meant by bone lamella?The majority of the bones in an adult skeleton are lamellar bones. The collagen bundles and their cells are arranged in an organised fashion.Lamellar bone contains osteocytic lacunae that are uniformly and regularly distributed and largely contain monomorphic cells. The extracellular matrix that surrounds the cells is what gives compact bone its stiffness and hardness.Both organic and inorganic components make up this matrix. Collagen, for instance, gives bones their tensile strength, and hydroxyapatite crystals give them their compressive strength.The osteon is made up of a central canal known as the osteonic (Haversian) canal and concentric rings (lamellae) of matrix around it.To learn more about Bone Lamella, refer to:
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The complete question isan osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only. true or false
identify the functions of oxytocin. select all that apply. multiple select question. triggers the breakdown of glycogen stimulates milk ejection from the mammary glands stimulates the development of ovarian follicles stimulates the production of milk stimulates uterine contractions
Oxytocin, which is secreted by the posterior pituitary, produces uterine contractions. The thyroid releases the hormone calcium which lowers blood calcium levels. In contrast to calcitonin, the parathyroid hormone raises blood calcium levels.
Describe oxytocin?Oxytocin has two major physiological effects: it stimulates uterine contractions during labour and childbirth and stimulates breast tissue contractions to promote lactation after childbirth.
Describe tissue?Multicellular organisms have a level of structure called physiology, which is made up of a set of physically and functionally related cells and the intercellular material between them.
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george beadle and edward tatum used mutant strains of neurospora to formulate the one-gene-one-enzyme hypothesis. researchers later updated this hypothesis to propose that one gene encodes one polypeptide because proteins can have multiple subunits. consider a heterodimeric protein. how many genes are required to form this protein?
George Beadle and Edward Tatum used mutant strains of neurospora to formulate the one-gene-one-enzyme hypothesis. researchers later updated this hypothesis to propose that one gene encodes one polypeptide because proteins can have multiple subunits. The two unique genes are required for mutation to form this protein.
A mutation might or might not have an effect on an organism's phenotype, or its outward features. Evolution, cancer, and the maturation of the immune system, including junctional variation, are among the beneficial and ill biological processes in which mutations take part. All genetic variety results through mutation, which also provides the justification for the action of forces of evolution like natural selection. Sequence changes brought on by mutation can take many distinct forms. Gene mutations can be inert, change a gene's outcome, or stop a gene from functioning properly or fully.
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What is the relationship between the DNA sequence, the mutation and the resulting protein?
Answer:
Read below:
Explanation:
The DNA sequence is the blueprint for the production of a protein. A mutation is a change to the DNA sequence that affects the production of the protein, resulting in a different protein with different characteristics than the original protein.
The resulting protein will have different characteristics than the original protein due to the mutation, and it may function differently or have different effects on the body or organism.
Carrots that are immersed in salt water for several hours become limp and soft. From this we can deduce that the cells of the carrots are
When carrots become limp and soft when immersed in salt water for several hours, it can be deduced that the cells of the carrot are hypotonic when compared to the salt water.
Hypotonic refers to the those cells or solutions that have more quantity of solvent and less quantity of solutes when compared to another cell or solution. The result of hypotonicity is that the cell or solution loses solvent in order to increase the solvent concentration in the other cell/solution.
Cell is the fundamental unit of living organisms. A cell consists of all the essential components required for its survival. Cells can be categorized into two forms: prokaryotic cell and eukaryotic cell. Eukaryotic cells further have two types: plant cell and animal cell.
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What neurotransmitter is involved in skeletal muscle contraction?
Acetylcholine (ACh) is the neurotransmitter is involved in skeletal muscle contraction.
When an action potential reaches the axon terminal of a motor neuron, it triggers the release of ACh into the synapse, or the tiny gap between the neuron and the muscle cell. The ACh then binds to receptors on the muscle cell, which triggers an influx of calcium ions into the cell. This influx of calcium ions causes the muscle fibers to contract by activating the protein actin and myosin. The muscle contraction will stop when the ACh is broken down by the enzyme acetylcholinesterase (AChE) or when the ACh is taken back up by the nerve terminal.
Thus neurotransmitters play an important role in muscle contraction.
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which of the following carries the information necessary to activate withdrawal of the hand from a hot object? a. sensory neuron b. motor neuron c. interneuron d. recepto
Afferent sensory neurons transmit information from sensory receptors, in this case, the skin's receptors, to the spinal cord and brain via neural pathways.
Placing your finger on a hot surface and removing it before you feel any pain is an illustration of a withdrawal reaction. A sensory neuron transmits sensory data from this reflex to the spinal cord. Afferent sensory neurons transmit information from sensory receptors, in this case, the skin's receptors, to the spinal cord and brain via neural pathways. Once you touch a hot exterior with your fingers, your sensory neurons will fire and transmit messages to the rest of your central nervous about the data they have just received. Sensory neurons are indeed the cells which are stimulated by sensory information from of the environment. The remainder of the body receives messages from the brain via motor neurons.
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if a cell has a diploid number of six before meiosis, how many chromosomes will be in each of the four daughter cells if one pair of chromosomes experiences nondisjunction during meiosis i?
Four (4) daughter cells will have the incorrect number of chromosomes following meiosis if nondisjunction takes place during meiosis I.
When homologous chromosomes fail to separate during meiosis 1, a condition known as nondisjunction, one of the daughter cells will possess the two chromosomes from the pair while the other cell will receive none.
If meiosis 1 proceeds correctly but meiosis 2 experiences nondisjunction, sister chromatids are unable to split.
From a diploid germ cell, the typical meiotic process yields four daughter haploid cells (n) (2n). Because each daughter cell has half as many chromosomes as the mother cell, it is a haploid cell.
Under typical circumstances, each haploid cell with an initial diploid number of 8 (2n=8) will have two haploid progenies.
However, in the shown case, meiosis I results in the nondisjunction of one homologous pair of chromosomes (in the attached file, you will recognize this pair as the red one). As normal, the additional chromosomes split. As a result, one of the daughter cells will contain five chromosomes instead of four as planned, while the other daughter cell will be missing a chromosome (three instead of four). Normal meiosis II takes place. Four gametes are created in the end, two of which have five chromosomes and the other two having three apiece.
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from an evolutionary perspective, what is the significance of reproductive isolation developing between two populations within a species? question 21 options: speciation due to reproductive isolation results in extinction of the ancestral species. when two populations cannot interbreed, the flow of genetic information between them stops. overtime, reproductive isolation leads to increasing competition between the populations. signs of breeding population decreases, the mutation rate decreases resulting in greater fitness.'
from an evolutionary perspective,the significance of reproductive isolation developing between two populations within a species is thar when two populations cannot interbreed, the flow of genetic information between them stops.
A group of behavioural patterns, physiological processes, and evolutionary mechanisms that are essential for speciation make up the mechanisms of reproductive isolation. They either stop members of various species from having children or or they make sure that any children are sterile.
Fish from two closely related but habitat-specific species don't mate. Two separate types of fruit flies producing various pheromones. tiger and leopard mating, resulting in the creation of an undeveloped zygote.
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The gene for the production of human insulin is inserted into certain bacterial cells. The offspring of these bacterial cells will most likely be able toO Reproduce sexuallyO Destroy pathogensO Form human tissueO Synthesize this hormone
The gene for the production of human insulin is inserted into certain bacterial cells. The offspring of these bacterial cells will most likely be able to d) synthesize this hormone.
When the gene that makes human insulin is inserted into a specific bacterial cell, it is done through a process called genetic engineering. This is a method of introducing a specific gene into the organism's DNA to confer a new trait or trait. . In this case, the introduced trait is the ability to produce human insulin.
Bacteria that receive this gene use the information encoded in the gene to produce the protein insulin. This means that the progeny of these modified bacteria can also produce insulin. This technology is used in the production of insulin as it is a cheap and efficient way to produce large amounts of the hormone used to treat diabetes.
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Plants and animals are made up of what cells.
Answer:
plants are multicellural so they are made from different cells
Answer:
Eukaryotic cells
Explanation:
1. Plant and animal cells are eukaryotic, meaning that they have nuclei. Eukaryotic cells are found in plants, animals, fungi, and protists.
Why is the Calvin Cycle considered a cycle?
Answer:
Why is the Calvin cycle considered a cycle? The Calvin cycle is a dark reaction because it does not need sunlight. Although it can happen during the day, this process does not require energy from the sun to work.
Explanation: it does not need sunlight.
