The correct option is A ; Homozygous for that gene . In genetics, homozygous means having inherited the same versions (alleles) of a genomic marker from both biological parents. As a result, a person who is homozygous for a genetic marker has two identical copies of that marker.
Homozygous means you inherited the same version of the gene from both parents, resulting in two matching genes. Heterozygous means that you have a distinct version of a gene from each parent. They are incompatible.
Brown eyes or freckles are examples of homozygous dominant traits. Homozygous recessive disorders, marked by two lowercase letters such as bb, have two copies of the alleles encoding the recessive trait.
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Match the vocabulary word with the proper definition.
Definitions
_____ 1. provide a mechanical barrier at body openings
_____ 2. disease-causing agents
_____ 3. a type of white blood cell
_____ 4. living organisms that help protect the body
_____ 5. the most important mechanical barrier
_____ 6. a slimy substance that traps pathogens
_____ 7. the process in which leukocytes engulf pathogens
_____ 8. destroy pathogens on the outer body surface, at body openings, and on inner body linings
_____ 9. the first reaction of the body to tissue damage or infection
_____ 10. physically block pathogens from entering the body
_____ 11. protects the body from worms, germs, and other agents of harm
_____ 12. sweep mucus and pathogens toward body openings
Terms
a. biological barriers
b. chemical barriers
c. cilia
d. immune system
e. inflammatory response
f. leukocyte
g. mechanical barriers
h. mucous membrane
i. mucus
j. pathogens
k. phagocytosis
l. skin
Each of the vocabulary word should be matched with the proper definition as follows;
Mucous membranes: provide a mechanical barrier at body openings.Pathogens: disease-causing agents.Leukocyte: a type of white blood cell.Biological barriers: living organisms that help protect the body.Skin: the most important mechanical barrier.Mucus: a slimy substance that traps pathogens.Phagocytosis: the process in which leukocytes engulf pathogens.Chemical barriers: destroy pathogens on the outer body surface, at body openings, and on inner body linings.Inflammatory response: the first reaction of the body to tissue damage or infection.Mechanical barriers: physically block pathogens from entering the bodyImmune system: protects the body from worms, germs, and other agents of harm.Cilia: sweep mucus and pathogens toward body openings.What is a pathogen?A pathogen can be defined as any group of living microorganisms that are capable of causing diseases and harm to their host. In Science, some examples of pathogen include the following:
FungiWormsProtozoaInfectious proteins (prions).VirusBacteriaWormsRead more on pathogens here: brainly.com/question/1406024
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Germ-line cells are haploid but gametes are diploid.a. trueb. false
The given statement is true that germ-line cells are haploid but gametes are diploid because when male and female gametes merge during fertilization, they produce a diploid cell or zygote with two pairs of chromosomes. .
While gametes are diploid, germ-line cells are haploid. In prophase, I, independent assortment will takes place. Homologous chromosomes' non-sister chromatids. Two chromatids, one on each of the two homologous chromosomes.
A germ cell will splits into two portions during meiosis (reduced division), which leads to the formation of the four gametes. A diploid (i.e., containing coupled chromosomes) zygote will be created during fertilization by uniting the male as well as female gametes.
Mitosis will make diploid offspring cells that are indistinguishable to the parent cell. Meiosis I is where the majority of the variations between the mitosis and meiosis will occur. The homologous chromosomal pairs will connect and are bonded together by the synaptonemal complex during meiosis I.
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Arrange the mentioned terms in such a way that you get the correct order of the stages of the evolutionary process: coacervates, inorganic compounds, heterotrophic prokaryotes, multicellular organisms, chemical element, autotrophic prokaryotes, simple organic compounds, protobionts, terrestrial organisms, complex organic compounds, eukaryotes.
The correct order of the stages of the evolutionary process of the mentioned terms is as follows:
chemical elementinorganic compoundssimple organic compoundscomplex organic compoundscoacervatesprotobiontsheterotrophic prokaryotesautotrophic prokaryotes,eukaryotesmulticellular organismsterrestrial organismsWhat is the evolutionary process?The evolutionary process refers to the process by which complex living organisms arose from simple inorganic compounds.
The process of evolution causes a population's genetic makeup to change throughout time. Organisms adapt to their changing environments through evolution, which can produce altered genes, unique features, and new species.
Natural selection, genetic drift, gene flow, and mutation are the four driving forces behind evolution.
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Relate specific chromosomal aberrations to the altered phenotypes.Drag the appropriate labels to their respective targets. Not all labels will be used.
-Turner syndrome- X chromosomal monosomy -Down syndrome- trisomy 21 -Patau-trisomy 13 -Gossypium- amphidiploid -Vertebrate liver cells Endopolyploidy is the multiplication of chromosomal.
A chromosome is a lengthy DNA molecule that contains some or all of an organism's genetic material. The extremely long thin DNA strands in most chromosomes are wrapped by packing proteins; the most essential of these proteins in eukaryotic cells are the histones. These proteins, with the help of chaperone proteins, bind to and compress the DNA molecule in order to keep it intact. [1] [2] These chromosomes have a complicated three-dimensional structure that is important in transcriptional control. Only during the metaphase of cell division are chromosomes visible under a light microscope (where all chromosomes are aligned in the center of the cell in their condensed form). [4] Each chromosome is duplicated before this occurs.
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[Anatomy of the eye] What forms the primary portion of the nervous tunic?
The anatomical structure that forms the primary portion of the nervous tunic is the retina.
What is the nervous tunic?The retina is the inner nerve tunic or nervous tunic.
The retina is made up of an inner layer of nervous tissue (the neural layer) that is covered by an outer layer of pigmented epithelium. The pigmented epithelium contains vitamin A, which is required by photoreceptor cells in the neural layer and absorbs light (like the choroid).
The pigmented component (pigment epithelium) and nerve part of the optic part, the physiological region that receives visual light rays, are further split into the following layers: Pigment epithelium is the first layer, followed by a layer of rods and cones and an external limiting lamina, which is actually a row of junctional.
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what is the most inclusive definition of a model organism (model system)? an animal on which new drugs can be easily tested an organism with a biological system that is representative of the same system in other organisms an animal that is evolutionarily closely related to humans an organism with a digestive system similar to that of humans
The most inclusive definition of a model organism (model system) is that it is an organism with a biological system that is representative of the same system in other organisms.
Because of its short generation period, defined genome, or resemblance to humans, an organism suited for investigating a certain characteristic, illness, or phenomena; examples include a fly, fish, mouse, or pig, whose biological system is well understood and accessible for laboratory experiments.
A model organism is a species that has been extensively researched, typically because it is simple to maintain and reproduce in a laboratory environment and offers unique experimental benefits.
Model organisms have the following characteristics:
Rapid maturation.Simple to manipulate.Life expectancy is short.Capability to have a great amount of offsprings.For more information on model organism, visit :
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When gathering glassware and equipment for an experiment, you shouldanswer choices- read all directions carefullyl to know what equipment is necessary.- examine all glassware to check for chips or cracks.- clean any glassware that appears dirty.- all of the above
(D.) all of the above, You should carefully read all instructions before assembling the essential tools for an experiment and inspect each piece of glass to look for chips or cracks. Likewise, wash any glassware that seems to be unclean.
An experiment is described as "a test under controlled conditions that is made to illustrate a known fact, to assess the validity of a hypothesis, or to determine the efficacy of something hitherto untried" in the American Heritage Dictionary of the English Language. a scientific experiment in which you carry out a sequence of tasks and closely monitor their results to discover new information. a trial, test, or tentative process; an action or method with the aim of learning something new or putting to the test a theory, hypothesis, etc. a living experiment, a teaching experiment, and a chemical experiment.
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A scientist found thousands of small worms thrashing about in a very small amount of soil and determined that the thrashing motion was due to having only longitudinal muscles. These worms are likely to have
A scientist discovered thousands of microscopic worms thrashing around in a tiny quantity of dirt and established that the thrashing motion was caused by just longitudinal muscles. These worms most likely have bilateral symmetry, genuine tissues, and a fully developed digestive tract.
What is longitudinal muscles?The longitudinal muscle fibers travel the length of the body, whereas the circular fibers encircle it. The contents of the body are liquids or tissues that may be molded into various forms while maintaining a constant volume. Peristalsis muscle movements are frequently described as wave-like because they contract and relax in a continual rhythm to propel food forward. They involve both the circular muscles that round your digestive tract's tubes and the longitudinal muscles that cross the tubes' walls.
Here,
A scientist discovered thousands of microscopic worms thrashing around in a very little amount of dirt and realized that the thrashing motion was caused by having just longitudinal muscles. These worms are believed to exhibit bilateral symmetry, genuine tissues, and a full digestive tract.
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What are 2 species concepts?
Groups of interbreeding natural populations in the biological species concept. An evolutionary species is a single lineage of ancestor-descendant populations of organisms that distinguishes itself from other lineages of organisms.
When groups of related plants that are distinct at the biological species level grow in the same area in nature, they do not interbreed. Biological Species Concept, which is a non-phylogenetic species concept due to the possibility of interbreeding with no ancestor references. A species is a group of reproducing natural populations that are unable to mate or breed with other groups of the same kind. The issue with this evolutionary concept arose when gaps in the fossil record imposed prejudice limits between species, particularly those that were undergoing regular size/shape evolution.
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Cyanobacteria is a bacterium that uses the process of?
A bacterium known as cyanobacteria uses the process of photosynthesis, in which water molecules are split into oxygen, protons, and electrons using the energy of light.
A phylum of bacteria that derives its energy from photosynthesis is known as cyanobacteria, also known as blue-green algae and Cyanophyta. It is believed that the ability of cyanobacteria to perform oxygenic photosynthesis changed the early reducing atmosphere into an oxidizing one, which significantly altered the composition of life forms on Earth by promoting biodiversity and driving oxygen-intolerant organisms to the brink of extinction. According to the endosymbiotic theory, cyanobacterial ancestors of plants and eukaryotic algae developed chloroplasts through endosymbiosis.
Although some species of cyanobacteria may also employ hydrogen sulfide, as is the case with other photosynthetic bacteria, water is typically used as an electron donor and oxygen is produced as a byproduct. The Calvin cycle is used to turn carbon dioxide into carbohydrates. The photosynthetic apparatus is typically encased in thylakoids, which are folds in the cell membrane.
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What are the two basic two types of conservation in biodiversity?
There are two main types of conservation in biodiversity: in situ and ex situ conservation. In situ conservation refers to the preservation of biodiversity within natural ecosystems and habitats.
This can be done through the protection and management of specific areas, such as conservation national parks or wildlife reserves. Ex situ conservation, on the other hand, involves the preservation of biodiversity outside of natural habitats, such as in zoos, botanical gardens, and seed banks. This can be done through conservation captive breeding programs, seed collection and storage, and other methods of preserving biodiversity genetic material. Both in situ and ex situ conservation play an important role in protecting biodiversity, and a combination of biodiversity the two approaches is often used.
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Which of the following is an example of a biological contaminant?
Wood shavings in a glass of milk
Dirt on a mushroom
Norovirus in shellfish
Bleach in a cup of coffee
The correct option is C ; Norovirus in shellfish, Oysters and other filter-feeding shellfish can contain viruses and germs that can cause disease or death if consumed uncooked.
Anyone who consumes raw shellfish is susceptible to norovirus. Mold, home dust, bacteria, viruses, animal fur, cat saliva, pollen, cockroaches, and mites are examples of biological pollutants.
Noroviruses are discovered in infected people's feces or vomit. They are very infectious and rapidly transferred from person to person. Some foods can be tainted at the point of origin. Shellfish, for example, may be polluted by sewage in water before being collected.
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Identify the four chambers of the heart. Explain where oxygen enters and leaves the bloodstream. Same for CO2. Compare the functions of arteries, capillaries, and veins. Explain where urea is added or removed from the bloodstream. Do the same for glucose.
Answer:
see below
Explanation:
The four chambers of the heart are the right atrium, right ventricle, left atrium, and left ventricle. The right atrium receives deoxygenated blood from the body and pumps it into the right ventricle. The right ventricle then pumps the deoxygenated blood into the lungs, where it receives oxygen and releases carbon dioxide. The oxygenated blood then returns to the left atrium through the pulmonary vein. The left atrium pumps the oxygenated blood into the left ventricle, which then pumps it out to the rest of the body through the aorta.
Oxygen enters the bloodstream in the lungs, where it diffuses across the alveoli walls and into the pulmonary capillaries. Carbon dioxide leaves the bloodstream in the lungs, where it diffuses across the alveoli walls and into the air.
Arteries are blood vessels that carry oxygenated blood away from the heart to the body's tissues. Capillaries are the smallest blood vessels in the body and are responsible for exchanging oxygen and carbon dioxide, as well as other nutrients and waste products between the blood and the body's tissues. Veins are blood vessels that carry deoxygenated blood back to the heart.
Urea is a waste product of protein metabolism and is formed in the liver. It is added to the bloodstream in the liver and removed from the bloodstream in the kidneys through the process of urine formation.
Glucose enters the bloodstream from the small intestine after being absorbed from food, and it leaves the bloodstream as it is taken up by cells for energy production or storage.
The photograph to the right is a magnified image of bacteria viewed under a microscope.
A.if the magnification power(40) of the microscope increased explain how the apparent size and quantity of the bacteria observed with the microscope would change
The field of vision of a microscope changes as the magnification changes. In other words, the field of view reduces as magnification increases.
What are the purposes of microscopes?The microscope is a tool which can be used to examine cells and other tiny objects. With at least 1 lens in the microscope, an object's picture is enlarged. Because of the way this lens bends light, an object appears larger than it really is.
Which microscope makes the best use of cells?The most typical imaging device for live cells is an inverted epifluorescence microscope. The objective of such a microscope views the material from below. For cell biology imaging, inverted microscopes are common because they enable imaging through with a glass slide for seeing cells grown above.
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In which stage of meiotic division centromere divides?A. Anaphase IB. Anaphase IIC. Metaphase IID. Both A and B
During Anaphase I stage of meiotic division centromere divides.
Meiosis or reductional division is the division in which the number of chromosomes get half in daughter cells. It is predominantly used to produce gametes inside the body.
In Anaphase I, the chromosomes that were previously duplicated and attached at the centromere ( called sister chromatids) are pulled apart by the spindle fibers and are separated to opposite poles of the cell. This results in the formation of two identical sets of chromosomes, called haploid cells, each with a single copy of each chromosome. This separation of sister chromatids is mediated by the action of the enzyme called separase which cleaves the protein that holds the sister chromatids together at the centromere.
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Part C: Simulate Reforestation
The government has a plan to limit the effects of deforestation. It involves planting new trees to replace some of the larger trees chopped down by deforestation.
In year 5: 540 new trees will be planted
In year 10: 900 additional new trees will be planted
Figure out how many blocks of the deforested regions will be restored in the year 5 and year 10 grids. Choose a new color for the blocks that represent the reforested regions and make adjustments to your grids. Then use the Insert Image button to insert screen shots of the two grids in the answer space.
Reforestation is the process of planting new trees in an area where forest cover has been reduced or lost. The government's plan to limit the effects of deforestation by planting new trees is a common approach to reversing the negative impacts of deforestation.
What is reforestation?Planting new trees in a forest where the number of existing trees has been declining is known as reforestation. A new forest is created when new trees are planted or seeds are sown in an area where none previously existed.
This can help to restore habitats for wildlife, improve air and water quality, and mitigate climate change by absorbing carbon dioxide from the atmosphere. However, it's important that the new trees are planted in a way that is sustainable and doesn't harm other ecosystems, and that the underlying causes of deforestation are addressed.
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[Anatomy, Eye] ________, one of the clearest substances on earth, is the protein responsible for the lens.
Crystallins one of the clearest substances on earth is the protein responsible for the lens.
What is the function of the lens of the eyes?The eye contains the lens.
The lens modifies the eye's focus distance by altering its shape. To put it another way, it concentrates the light rays that come through it (and onto the retina) to produce sharp images of things that are placed at varied distances.
The transparency of the lens is caused by a structural protein called crystallin, which is located in the cornea and lens of the eye. It has also been found in aggressive breast cancer tumors and other locations, including the heart.
The alpha- and beta-gamma-crystallins, two protein superfamilies, are what make up the lens. They both exhibit a fundamental 2-beta-sheet domain fold.
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_____ is the maximum blood pressure during contraction of the ventricles; diastolic pressure is the minimum pressure recorded just prior to the next contraction.
Systolic pressure is the maximum blood pressure during contraction of the ventricle.
Which stage of contraction has the highest blood pressure?
The following qualities characterize systole:The heart muscle contracts during systole.
Blood is forced out of the heart and into the big blood arteries of the circulatory system as the heart contracts.
A person's blood pressure rises during systole.
What are the blood pressure's maximum and minimum readings?
Diastolic pressure is the lowest pressure measured right before the next contraction; it reaches its maximum during ventricular contraction.
The optimal blood pressure for an adult is 120/80 when they are physically at rest. Up to 139/89 is considered to be within the usual range and poses no health risks. However, levels higher than 129/84 are , are already considered in the elevated-normal range.
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Because you have taken microbiology, you are not surprised when she tells you that a ______ is the probable cause of cucumbers' condition.
Because you have taken microbiology, you are not surprised when she tells you that a pathogen is the probable cause of cucumbers' condition.
Nuclear membrane reforms cytoplasm divides 4 daughter cells are formed?
nuclear membrane that has been reconstructed and divided cytoplasm. Four haploid daughter cells in all are created. is referred to as "reduction division" because it reduces the number of chromosomes by half.
the tiniest biological unit that can sustain life on its own and makes up all living things and physiological tissues. The fundamental units of all living things are cells. There are many billions of cells in a human body. They support the body's structure, ingest nutrients from meals, transform those nutrients into energy, and perform certain tasks. The molecules that enter and exit the cell are regulated by the cell membrane, which surrounds the cell. Cell biology is the study of cells, including their internal structural makeup and the functions of each organelle. Cells were first discovered by biologist Robert Hooke. Cells make up all living things.
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Which of the following traits evolved last (most recently) on the "one small step" phylogeny? A. digits B. eyes on top of a flat head C. strong armlike bones D. not enough information to tell
A phylogenetic analyses is a branch diagram or even a tree that depicts the relationships that have developed over time between different biological species or even other entities based on similar characteristics.
A phylogenetic tree must be constructed in four distinct steps: Identification and acquisition of a collection of homologous DNA and protein sequences, alignment of those sequences, estimation of a tree from of the aligned sequences, & presentation of the tree in a way that makes the pertinent information clear to others are the first four steps. The morphological (body form), biochemical, behavioral, and molecular characteristics of species or other groupings can be used to construct a phylogenetic tree. In order to construct a tree, species are grouped into nested units based on common derived features (characteristics distinct from those of group's progenitor). A common ancestor is typically represented by a single branch at the base of many phylogenetic trees. Such trees are referred to as rooted by scientists, implying that just one ancestral lineage.
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15. What is the difference between minerals that form from magma and those that form by metamorphism?
Answer:
Metamorphic rocks are formed when rocks are exposed to heat, pressure, or both heat and pressure
Explanation:
In analyzing genetic data, what type of analyses can be conducted to determine whether deviation from the expected ratio is due to chance rather than to another, independent factor
The type of analysis that can be performed in analyzing genetic data to evaluate whether deviation from the expected ratio is caused by chance rather than another is "analyzing the genetic data using the Chi-Square analysis." Hence, the correct answer is A.
The Chi-Square analysis is a statistical method that is commonly used to determine if there is a significant difference between an observed frequency and an expected frequency in a population. It can be used to analyze genetic data in order to determine whether a deviation from the expected ratio is due to chance or another, independent factor.This method compares the observed and expected frequencies and calculates a Chi-Square statistic, which can then be used to determine the probability that the deviation is due to chance. If the probability is low, it suggests that the deviation is not due to chance and is instead due to another factor.
This question should be provided with answer choices, which are:
A. Analyzing the genetic data using the Chi-Square analysis.B. Analyzing the genetic data using an independent dominance cross.C. Analyzing genotypes by calculating the result of a dihybrid cross.D. Analyzing genotypes by calculating the results of a monohybrid cross.The correct answer is A.
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kisspeptin is a signal protein in humans that initiates the secretion of gonadotropin-releasing hormone (gnrh) from neurons found in the hypothalamus. endocrinologists are finding that kisspeptin and its receptor are important for sexual maturation at puberty. neurons that release kisspeptin contain cytosolic estrogen receptors and respond to high levels of estrogen by decreasing kisspeptin secretion. given what you know about cell signaling and signal molecules, which statement is true?
Kisspeptin has been linked to the control of ovarian function, trophoblast invasion, fertility control, parturition, and breastfeeding. So, it might present a viable cure for gonadotropin-dependent reproductive illnesses such IHH, HA, and PCOS.
The following succinct summary of KPs' function in reproduction:
Universally acknowledged to be crucial gonadotropin axis activators, kisspeptins play crucial roles in the beginning of puberty and the regulation of gonadotropin production.
KPs/function GPR54's in the neuroendocrine regulation of ovulation is one of the novel features of their physiology that have come to light.
The metabolic control of fertility is greatly influenced by kisspeptins as fundamental gatekeepers of reproduction.
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fine hair takes color faster because
Fine hair takes color faster because, in fine hair, the melanin granules are more tightly packed together.
Because coarse hair typically needs more time to absorb color, its timing is longer. Because fine hair absorbs color more quickly, the application time is shorter. Color may also quickly absorb into dry or permed hair. Insufficient processing time, or the hair color's inability to adhere for a sufficient amount of time, is a common cause of rapidly fading colors. If either you or your client has gray hair, this is especially true. The cuticles of grey hair are tightly packed and take longer to open and absorb the molecules of artificial hair color.
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where are the intercostal muscles that aid in ventilation located?
The intercostal muscles that aid in ventilation is located in the upper part of the rib cage.
The muscles of respiration are also called the 'breathing pump muscles'.All muscles that are attached to the human rib cage have the inherent potential to cause a breathing action. Muscles that are helpful in expanding the thoracic cavity are called the inspiratory muscles because they help in inhalation. Those that compress the thoracic cavity are called expiratory muscles and they induce exhalation.
Along with the diaphragm, the intercostal muscles are one of the most important groups of respiratory muscles. These muscles are attached between the ribs and are important in manipulating the width of the rib cage. There are three layers of intercostal muscles. The external intercostal muscles are most important in respiration. These have fibres that are angled obliquely downward and forward from rib to rib. The contraction of these fibres raises each rib toward the rib above, with the overall effect of raising the rib cage, assisting in inhalation.
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hybrid breakdown Definition
Hybrid breakdown is a type of reproductive isolating mechanism and reproductive failure. This leads to sterile and nonviable F2 generation offspring obtained from the mating of fertile viable F1 individuals.
Hybrid breakdown is defined as the reduced fitness observed in the offspring of the hybrids. the reduced fitness is however not observed in the hybrid themselves.
Fitness in the evolutionary terms is the reproductive success of an individual or a whole population. If two individuals are able to breed and produce fertile offspring, then they are considered to be fit and can believed to adapt better in their surroundings.
Hybrids are the offspring produced by the mating of two organisms belonging to different breeds, variety species or even genera. The example of hybrid is a mule obtained by the breeding of a horse and a donkey.
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the average adult body contains approximately ________ liters of blood.
More over 5 liters of blood make up the body of a typical adult human.
Blood supplies nutrition and oxygen to living cells while also removing waste from them. Along with delivering immune cells to fight infections, it also contains platelets, which can plug a blood artery that has been broken in order to stop blood loss.
The average adult human has roughly 5 liters of blood in circulation, though this amount varies depending on the person's size and weight. A typical woman has 4.2 liters, whereas a typical guy has 5.6 liters.
Blood volume in women is often lower than in men. However, a woman's blood volume rises by about 50% while she is pregnant.
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Which of the following is NOT an important source of resistance to blood flow?
total blood volume
vessel diameter
vessel length
blood viscosity
Total blood volume is NOT an important source of resistance to blood flow. while vessel diameter, vessel length, blood viscosity can work as the source of resistance to blood flow.
What is Blood Flow ?Blood flow describes the phenomena of blood circulation through the veins, through capillaries, and ultimately through the arteries.
Dynamics of blood flow :The dynamics of blood flow are termed as hemodynamics or hemodynamics. The similar homeostatic mechanisms from autoregulation which regulates hydraulic circuits also regulate the circulatory system of the body. The hemodynamic response continuously assesses and modifies bodily and environmental circumstances.
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A 46F, presents to the ED d/t sudden-onset, severe occipital headache & nausea. PMHx is sig for HTN & smoking. PE shows mild disorientation but no focal weakness, sensory loss, or cranial nerve abnormalities. Non-Contrast CT reveals diffuse hyperdensity in the subarachnoid space. CT angio reveals a ruptured ACA aneurysm. The pt undergoes endovascular coiling of the aneurysm. Four days later, there is a sudden deterioration in her level of consciousness & new, right-sided hemiparesis is observed. Repeat CT shows no sig changes.
Which of the following is the most likely cause of this pt's neurological deterioration?
(Arterial thrombosis
OR
Embolism
OR
Vasospasm)
Endovascular coiling of the aneurysm is performed on the patient. Four days later, her degree of consciousness abruptly declines and new right-sided hemiparesis is noticed. Repeat CT reveals no changes in sig. The most likely reason for this patient's neurological decline is vasospasm.
When a blood vessel in the brain narrows, it causes vasospasm, which prevents blood flow. It could happen two weeks after a subarachnoid hemorrhage or a brain aneurysm. If you recently experienced a brain aneurysm rupture or subarachnoid hemorrhage, you are more likely to get a cerebral vasospasm.
Fever, stiff neck, minor confusion, speech problems, one-sided paralysis, and severely compromised consciousness are all indications of a cerebral vasospasm.
Vasospasm can occur upon waking from sleep, when experiencing tension or anxiety, or as a result of hyperventilating. Cocaine, amphetamines, anti-migraine medications, and herbal supplements like ephedra or bitter orange are just a few examples of legal and illicit substances that might cause it.
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