The haploid gametes generated due to meiosis return back to their normal chromosome number after fertilization where a haploid male and a haploid female gamete fuse in order to produce the zygote that has the normal chromosome number.
Meiosis is the type of cell division where the parent cell divides to synthesized 4 daughter cells. This happens in two parts: meiosis I and meiosis II. The daughter cells produced have half the number of chromosomes than that of parent cell and therefore it is called reductional division.
Chromosome is the most compact form of genetic material that comprises of DNA and the histone proteins. Each chromosome consists of two sister chromatids.
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Find two places in Model 2 where electrons are released from chlorophyll by a photon of light coming from the Sun
Answer:
general answer in below
Explanation:
Electrons are released from chlorophyll by a photon of light coming from the Sun in two places: first, when the photon strikes a pigment molecule in the photosystem; and second, when a molecule of water is split to replace the electron donated by the chlorophyll molecule.
Hydrogen exists in three isotopes, h1, h2, and h3. the average atomic mass of hydrogen is 1.008 amu, which of these isotopes is most abundant? how do you know?
The average atomic mass of hydrogen (H) is 1.008 amu. Hydrogen is made up of isotopes 1H, 2H, and 3H. 1H is most abundant. Thus option C is correct.
What are isotopes?Isotopes are defined as a variation of an element that possesses the same atomic number but different atomic mass. It can be defined as the one of two or more forms of a chemical element with distinct physical properties but identical chemical properties. It can also be defined as atoms with same number of protons and electrons but different number of neutrons. According to stability of hydrogen 3H is more stable than 2H and then with 1H.
Thus, the average atomic mass of hydrogen (H) is 1.008 amu. Hydrogen is made up of isotopes 1H, 2H, and 3H. 1H is most abundant. Thus option C is correct.
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How many types of species are there Mcq?
There are several different ways to classify species, but the most widely used method is based on the Linnaean system of classification.
The separates species into different categories based on their physical characteristics and evolutionary relationships. According to this system, there are five major classification of species: Kingdom, Phylum, Class, Order, Family, Genus and Species. Each category is more specific than the one before it, with the species being the most specific. In total, there are approximately 8.7 million known species on Earth, and it is estimated that there may be as many as 1 trillion species on our planet on classification. However, many of these species have not yet been discovered or described by scientists.
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in a species with a diploid number of 6, how many different combinations of maternal and paternal chromosomes would be possible in gametes?
In a species with a diploid number of 6, 8 different combinations of maternal and paternal chromosomes would be possible in gametes.
A gamete only contains one chromosome from a homologous pair and is always haploid in nature. It is completely random for maternal and paternal chromosomes to be assigned to gametes. The organism's cells contain six diploid chromosomes, which corresponds to the information provided. This indicates that there are three pairs of homologous chromosomes in all.
The organism's gametes would each contain three chromosomes in total, one from each pair's maternal or paternal chromosome. Therefore, in the gametes of this organism, there are a total of 23=8 potential pairings of maternal and paternal chromosomes.
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how many calories in a slice of pizza with pepperoni
Between 300 and 350 calories in a slice of pizza with pepperoni,However, since pepperoni pizza has a lot of calories per slice, it's advisable to consume it in moderation.
According to the USDA National Nutrient Database, a single slice of pepperoni pizza normally includes between 300 and 350 calories, depending on the kind of dough and the establishment where it was purchased. Each serving of pepperoni pizza has 20 mg of cholesterol and 3.5 g of saturated fat. IU vitamin A, 2.4 mg of vitamin C, mcg of vitamin D, 2.70 mg of iron, 149.60 mg of calcium, and mg of potassium are all present in 85 g of pepperoni pizza.
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Cytochrome c is an enzyme located in the mitochondria of many types of cells. The number of differences in the amino acid sequences of Cytochrome c from different species are compared to human Cytochrome c in the data table. The fact that all of these organisms contain Cytochrome c could lead to the inference that
The fewer the differences, the closer the relationship and more likely the organisms share common ancestry.
What is the role of cytochrome C in evolutionary studies?Cytochrome C is a highly conserved enzyme that plays a role in respiration.Since this molecule changes little over time, it provides evidence of evolution.Also, most organisms have this molecule and scientists could determine the relatedness of the organisms based on their variations in their amino acid sequence.
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what are the relative potentials for force and power generation by a slow-twitch muscle fiber and a fast-twitch muscle fiber of the same diameter?
The fast-twitch fiber is capable of generating more power than the slow-twitch fiber, while the potential for force generation is the same. Option C is the correct answer.
While the potential for force generation is the same, the fast-twitch fibre can produce more power than the slow-twitch fibre. thus, regardless of fibre type, fibres of identical sizes would produce equivalent forces. The fast-twitch fibre would nevertheless provide more power since it would exert the same force at a faster pace.
Because they have a darker hue and more blood-carrying myoglobin, slow-twitch fibres are sometimes known as red fibres. Slow-twitch fibres are able to sustain force for a long time since they can supply their own energy source, but they cannot generate a lot of force.
Complete question:
What are the relative potentials for force and power generation by a slow-twitch muscle fiber and a fast-twitch muscle fiber of the same diameter?
A.The slow-twitch and fast-twitch fibers possess the same potentials for force and power generation.
B.The slow-twitch fiber is capable of generating more force than the fast-twitch fiber, while the potential for power generation is the same.
C.The fast-twitch fiber is capable of generating more power than the slow-twitch fiber, while the potential for force generation is the same.
D. The fast-twitch fiber is capable of generating more force than the slow-twitch fiber, while the potential for power generation is the same.
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based on your knowledge of biology. what is the immediate effect for a cell that cannot obtain glucose? usespecific terms you have learned in constructing your answer
The immediate effect for a cell that cannot obtain glucose is that it cannot do cellular respiration or fermentation.
What happens to the cell without glucose?The cell needs glucose to obtain energy, if a cell cannot immediately obtain glucose, the process of cellular respiration or fermentation may fail, depending on the type of respiration used by the cell.
Cellular respiration is what gives us ATP through glucose through its decomposition to become substances that provide energy to the cell. Without ATP the cell will not be able to carry out its cellular processes, which will end in its death since most of the processes in the cell are driven by ATP.
Therefore, we can confirm that the effect for a cell that cannot obtain glucose is that cannot do cellular respiration or fermentation.
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which sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown?
"UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown.
What is amino acids?Amino acids are chemicals that make proteins when they combine. The building blocks of life are amino acids and proteins. Amino acids are left over after proteins are digested or broken down. The human body requires amino acids to produce proteins, which aid in digestion. The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted. Amino acids are needed for the creation of body protein as well as other nitrogen-containing molecules including creatine, peptide hormones, and certain neurotransmitters. Although allowances are given in terms of protein, amino acids are the biological need.
Here,
The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted.
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Which of the following statements about a gene that shows maternal effect inheritance is true?
Offspring will have a mutant phenotype if the father has a mutant genotype.
Offspring will show a mutant phenotype if the mother has a mutant genotype.
Embryonic cells transcribe the gene.
Offspring will always show a mutant phenotype if they have a mutant genotype.
Offspring will show a mutant phenotype if the mother has a mutant genotype.
If the mother possesses a mutant genotype, the offspring will exhibit that genotype. This is accurate; the mRNA for the gene is supplied to the zygote by the mother during gene transcription.
What is the right way to define a gene?Genetic material that is transferred from parent to child. The chromosomes in the nucleus of cells have precise sites where genes are ordered sequentially on DNA sequences.
Describe a gene example.Many of your characteristics, like your skin tone and hair color, are determined by the genes you inherit. Perhaps Emma's mother carries two genes—one for brown hair and one for red hair—and she gave Emma the red hair gene.
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Every year, a new influenza vaccine is developed. What is the most likely reason that doctors do not use the same vaccine each year?
Which condition is essential for natural selection to occur?
A. Unlimited resources
B. Inherited variation
C. A static environment
D. A long life span
Answer:
В
Explanation:
Inherited variation
Natural selection is a process that occurs when certain inherited traits or variations of a species give certain individuals an advantage in their ability to survive and reproduce in a given environment. Therefore, for natural selection to occur, there must be inherited variation within a population. Other conditions such as unlimited resources, a static environment, and a long life span do not necessarily have a direct impact on natural selection. However, these factors can affect the relative fitness of individuals with different inherited variations and thus influence the outcome of natural selection.
The fat rendered from beef carcasses used to make products such as soap and lubricantsa. Trueb. False
The fat rendered from beef carcasses is known as tallow, and it is used to make a variety of products, such as soap and lubricants.
Tallow is made by "rendering" the fat from beef or mutton, which is a process of heating the fat to remove the impurities and make it suitable for use in a variety of applications.
Tallow is a hard, white or yellowish fat that is used to make soap, candles, lubricants, and cosmetics. It is also used as a source of biofuel. Tallow has been used for centuries as a source of fuel and in the production of candles and soap, but its use has decreased in recent times due to the availability of other, cheaper, and more convenient alternatives.
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Answer the following questions about the probable offspring of two heterozygous parents.
6. fill in the blank text field 1
enter
out of 16 offspring are likely to have smooth, green pods.
7. fill in the blank text field 2
enter
out of 16 offspring are likely to have smooth, yellow pods.
8. fill in the blank text field 3
enter
out of 16 offspring are likely to have wrinkled, green pods.
9. fill in the blank text field 4
enter
out of 16 offspring are likely to have wrinkled, yellow pods.
Answer:
2
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s
s
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ei think Ur answer and question is very correct go ahead you'll definitely get it correct don't be discouraged I looked at it and Ur correct dwwww
Explanation:
this is because I looked at Ur hypothesis and Ur theories and saw how inlined nthey are
in a population in hardy-weinberg equilibrium, the frequency of the homozygous recessive genotype is 0.16. this value corresponds to which term of the hardy-weinberg equation? group of answer choices
In a population in hardy-weinberg equilibrium, the frequency of the homozygous recessive genotype is 0.16, the fraction of the population bearing the recessive trait.
What is recessive trait?Recessive alleles have an effect only if the individual has two copies of the allele (also known as being homozygous). For example, because the gene for blue eyes is recessive, you must have two copies of the 'blue eye' allele to have blue eyes. The frequency of the homozygous recessive genotype in a population in hardy-weinberg equilibrium is 0.16, the proportion of the population with the recessive characteristic. Even if only one copy of the dominant characteristic exists, dominant traits are always displayed when the connected allele is dominant. Recessive qualities are only manifested if both linked alleles are recessive. If one of the alleles is dominant, the corresponding trait is less likely to appear.
Here,
The frequency of the homozygous recessive genotype in a population in hardy-weinberg equilibrium is 0.16, the proportion of the population with the recessive characteristic.
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which class of echinoderm is known for its serpentine arms that are easily distinguished from the central disc. a detritus feeder that uses its tube feet to sense the environment
Ophiroidea is known for its serpentine arms that are easily distinguished from the central disc.
What are echinoderm ?Echinoderm, any of the various marine invertebrate species that fall under the phylum Echinodermata, are recognised by their rough, spiky skin.
They are colourful, amorphous critters. Both biologically and geologically, they are crucial. Both the intertidal zones and the depths of the ocean include echinoderms. The fact that all members of the phylum Echinodermata are marine animals is an intriguing characteristic of this group of organisms.
Echinoderms get their name from the spines or bumps that cover the outside of many of their bodies. The echinoderms sea stars, sea urchins, sea cucumbers, brittle stars, and feather stars are examples.
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quantitative in a population of 3400, how many babies would you expect to carry an allele for cystic fibrosis, a homozygous recessive condition, but not be affected by it? assume that the frequency of the dominant allele is 0.8 and the population is at hardy-weinberg equilibrium.
Inside the Caucasian population in the United States, cystic fibrosis is a genetic disorder that affects roughly 1 in 2,500 newborns.
The sum of the alleles is equal to the sum of the people multiplied by two. Because there are two BB genotypes and two Bb genotypes with in small population, 2x2 + 2 = six B alleles. 5 individuals equal a total of 2 x 5 = 10 alleles. The numerator of the heterozygous genome number is equivalent to the allele frequency, according the Hardy-Weinberg principle. 0.7 is the rate of the dominant allele, and q is the percentage of the recessive phenotype in a population. 2 p q 2pq The heterozygous dominant genotype's frequency is 2pq. p 2 p^ The homozygous dominant genotype frequency is 2p2. Inside the Caucasian population in the United States, cystic fibrosis is a genetic disorder that affects roughly 1 in 2,500 newborns. There is a 75% likelihood that any of the offspring of parents who are heterozygous (Ww) will have a queen's peak.
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The Himalaya Mountains were formed due to
which type of forces?
A. destructive forces
B. an absence of gravity
C. constructive forces
Answer:
C. constructive forces.
Explanation:
The Himalayas were formed as a result of the collision of the Indian tectonic plate with the Eurasian plate. This collision caused the land to rise and form the Himalayan mountain range. This process is known as oogenesis, or the formation of mountains through tectonic activity, which is a constructive force.
Which is the correct sequence for the flow of energy in a food chain *?
The flow of energy in a food chain: Primary consumers receive energy from primary producers. The energy is then distributed to secondary and tertiary consumers from the primary consumers.
A food chain is a linear network of links in a food web starting from producer organisms and ending at an apex predator species, detritivores, or decomposer species. A food chain also shows how organisms are related to each other by the food they eat. Each level of a food chain represents a different trophic level.
Producers, primary consumers, secondary consumers, and decomposers make up an ecosystem's food chain. The grass is the primary producer here, and the insect is the primary consumer. A bird, a secondary consumer, consumes the insect, and a snake, a tertiary consumer, consumes the bird.
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how do bacteria control pathogenicity with quorum sensing
It is believed that quorum sensing gives pathogenic bacteria a way to reduce host immunological reactions by postponing the development of tissue-damaging virulence proteins until enough bacteria have gathered and are ready to overpower host defensive mechanisms and establish infection.
A bacterium's capacity to detect information from other cells in the population when they reach a specific concentration is known as quorum sensing in prokaryotic biology (i.e. a Quorum). When a single bacterium releases autoinducers (AIs) into the environment, their concentration is too low to be noticed, according to the theory underlying the phenomena of quorum sensing, or cell-to-cell communication. The bacteria can detect a crucial cell mass and respond by activating or repressing target genes when there are enough bacteria present. However, when enough bacteria are present, AI concentrations rise to a threshold level.
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What is a major subdivision that serves as the communication lines that link all parts of the body to the central nervous system?
The body's muscles, glands, and sensory receptors all communicate with the central nervous system (CNS) via the peripheral nervous system (PNS).
Two halves, the central nervous system and the peripheral nervous system, combine to form the nervous system of bilateral animals.
Outside of the brain and spinal cord, there are nerves and ganglia that make up the peripheral nervous system (PNS).
The portion of your nervous system that is located apart from your brain and spinal cord is known as your peripheral nervous system (PNS).
It is crucial for both relaying data from various regions of your body back to your brain and carrying out instructions from your brain to various bodily components.
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Adult height in humans is partially determined by our genes. When environmental conditions are held constant, humans have a wide variety of heights (not just short, medium, and tall). Height is probably influenced by
Human adult height is influenced in part by our DNA. Humans have a broad range of heights while environmental factors are consistent (not just short, medium, and tall). Height is most likely regulated by: Genes that code for proteins.
The most important element influencing a person's height is their genetic composition, or DNA. However, numerous other factors, including as diet, hormones, and medical conditions, might impact height during growth. Scientists estimate that DNA accounts for around 80% of a person's height.
Scientists believe that around 80% of an individual's height is influenced by inherited DNA sequence differences, but which genes these alterations are in and what they do to effect height are yet unknown. The researchers discovered that the HMGA2 gene plays a substantial influence in height variance and that altering only one letter in the genetic code had a significant impact on growth.
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Classify each of the following species as autotrophs, consumers, detritivores and/or saprotrophs based on their modes of nutrition.
Here the species are not given and hence cannot be classified.
Based on the modes of nutrition organisms can be classified as:
Autotrophs: organisms that can produce their own food through photosynthesis or chemosynthesisConsumers: organisms that obtain energy by consuming other organismsDetritivores: organisms that consume dead plant and animal materialSaprotrophs: organisms that obtain energy by breaking down dead plant and animal materialA plant: AutotrophA rabbit: ConsumerAn earthworm: Detritivore and SaprotrophA lion: ConsumerA decomposing leaf: SaprotrophA fungus: SaprotrophNote: Some organisms can have multiple modes of nutrition, so they can be classified into more than one category.
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what is the pigment that is produced when the skin is exposed to uv radiation?
Skin is shielded from the UV radiation of the sun by melanin. These can prematurely age the skin by burning it and reducing its suppleness. People get tans because sunshine increases melanin production and darkens the skin.
Your body creates hair, eye, and skin pigmentation with a chemical called melanin. Your eyes, hair, and skin will be darker as your melanin production increases. Your body's melanin content is influenced by a number of variables, including your genetics and how much sun exposure your ancestors received.What happens when melanin levels are low?
A lower melanin level results in less solar protection. This makes wrinkles, an uneven texture, and discolouration more likely. skin cancer risk is rising. Your chances of getting skin cancer rise due to the elevated danger of UV damage.
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the apical margin of a dental restoration extends into the area of the tooth that is normally occupied by the junctional epithelium and connective tissue attachment fibers. is this restoration good for the health of the periodontium? group of answer choices a) yes, removal of decay will permit better self-care in this area b) yes, the design of this restoration presents no problems for the periodontium c) no, this restoration violates the biologic width d) no, because to extend subgingivally in this manner, the margin of the restoration must not be well adapted to the tooth surface
No, this restoration is not good for the health of the periodontium, this violates the biologic width.
What does junctional epithelium apical migration entail?When periodontal pockets arise, junctional epithelium (JE) migrates apically. Lipopolysaccharide (LPS) and proteases are agents linked to the onset and progression of periodontal disease. When given topically, these agents cause the JE to migrate apically along the root surface.
Importance of junctional epitheliumWhen the junctional epithelium (JE), an epithelial component that is immediately attached to the tooth surface and has the special ability to guard against bacterial infections, is damaged, the periodontal tissue becomes inflamed, and the alveolar bone is lost.
The long junctional epithelium is what?Hemidesmosomes and the basal lamina work together to experimentally develop long junctional epithelium that adheres to the cementum surface. The peri-implant epithelium differs from the usual junctional epithelium in terms of proliferation and sticky structure.
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Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.
The body's visual organ is the eye. The iris is represented by 1, the pupil by 2, the lens by 3, the cornea by 4, the retina by 5, and the optic nerve by 6.
The parts of the eye are as follows: On the outside of the eye, a transparent membrane called the cornea regulates the amount of light that reaches the eye. It shields the iris from direct light exposure. By contracting and relaxing, the iris muscle regulates the amount of light that enters the eye. As the eye widens in the dark and contracts in very bright light to let less light in, the pupil serves as a window for light entry. The lens directs the incoming light toward the eye's retina. This allows the person to see things clearly. Through the optic nerves, the retina transmits the image to the brain. The retina has rod and cone cells.
The full question was:
Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.
(1)
(2)
(3)
(4)
(5)
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This food web represents a community in a rain forest.
Answer: A, E, C
Explanation:
If the Boa constrictor dissapears then coati won't have a predator eating them,which results in their population growing.
epinephrine acts as a signal molecule that attaches to _____ proteins.
Epinephrine acts as a signal molecule that attaches to G protein linked receptor proteins.
Our adrenal gland may be producing adrenaline if we are anxious before an exam or competition. Epinephrine causes the creation of the second messenger molecule cyclic AMP when it attaches to its receptor on a muscle cell (a type of G protein-coupled receptor) (cAMP).
Numerous locations can lead to signal amplification. For instance, a receptor can activate a series of G proteins as long as epinephrine is attached to the receptor.
The inside surface of the cell membrane is where G proteins transmit their signal. When a receptor attaches to the correct hormone or neurotransmitter, such as adrenaline, the process begins. This modifies the receptor's structure and binds to the inside, inactive three-chain G protein.
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help me pleasee i need thiss
Answer:
The chromosomes in the homologous pair each have the same genes in the same order, but there might be variations between them, resulting in different alleles.
Explanation:
the following are four parts of hepatic (liver) function. rank them in order of largest to smallest level of organization. a. a protein expressed on the surface of a hepatocyte (liver cell) that helps glucose move across the plasma membrane b. the unusual arrangement of blood vessels that delivers nutrients absorbed from the large intestine directly to the liver c. small tubes (canaliculi) within the liver that move bile secreted by hepatocytes (liver cells) into ducts that deliver it to the gall bladder for storage d. synthesis and exocytosis of serum albumin (a protein) by a hepatocyte (liver cell)
The order of largest to smallest level of organization in heptic function is B - C - D - A. That is provided in the question.
What are the liver's main purposes?modulation of lipid and carbohydrate metabolism.protein metabolismcreation and degradation of plasma proteins.mineral and vitamin storage.metabolize and detoxify a variety of drugs.metabolic waste materials are released into bile during an excretory function.What are the components of the liver and what do they do?The right and left lobes are the names of the liver's two substantial portions. Along with portions of the pancreas and the intestines, the gallbladder is located beneath the liver. Together, the liver and these organs process, absorb, and digest food.
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