The genotype and phenotype of a cross between two heterozygous green pea plants are as follows:
Genotype: 1 (GG): 2 (Gg): 1(gg)Phenotype: 3 green: 1 yellowWhat is genotype and phenotype?Genotype refers to the part (DNA sequence) of the genetic makeup of an organism which determines a specific characteristic (phenotype) of that organism while the phenotype is the appearance of an organism based on genotype.
According to this question, the gene coding for colour in pea plant is involved. Green (G) is dominant over yellow (g).
If two heterozygous green plants are crossed i.e. Gg × Gg, the offsprings produced are as follows:
1 GG2 Gg1 ggThis means that the genotype and phenotype of the cross is as illustrated above.
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1. which of the following is trna's job? bring any codon to the ribosome so it can be added to the growing protein. bring any amino acid to the ribosome so it can be added to the growing protein. bring a specific amino acid to the ribosome so it can be added to the growing protein. bring a specific codon to the ribosome so it can be added to the growing protein.
Answer:
Ribosomes, Transcription, Translation
Explanation:
explain the role of the three energy systems during exercise and provide an example using track running events. which muscle fiber types are the major source of energy production during these track events?
'The three energy systems during exercise are the phosphagen system, glycolytic system, and oxidative system.
Phosphagen System: This system provides energy for short, intense bursts of activity, such as a 100-meter sprint, lasting 10-15 seconds.
Glycolytic System: This system provides energy for moderate intensity, longer duration activities, such as a 400-meter run, lasting about 45-60 seconds.
Oxidative System: This system provides energy for low to moderate intensity activities, such as a marathon, lasting several hours.
How are the energy systems used?During a 100-meter sprint, the phosphagen system is the primary source of energy, as the runner needs to generate a large amount of power and speed over a short duration.
As the duration increases, the glycolytic system becomes increasingly important, providing energy for the runner to maintain their pace over a longer distance
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quzilet what is the mechanism of action of the cystic fibrosis transmembrane conductance regulator (cftr)?
Cystic fibrosis transmembrane conductance regulator (CFTR) allows for the diffusion of chloride across the epithelium of a cell.
Cystic fibrosis, the most common autosomal recessive disease in the Caucasian population, is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, which encodes the cAMP-activated chloride bicarbonate channel that controls ion and water transport in the Secretion regulates the duct of the epithelium.
While all mutations result in the absence or reduction of channel function, the mechanisms by which this occurs are diverse, ranging from a lack of full-length mRNA, reduced levels of mRNA, impaired folding and transport, targeted degradation, reduced gating, or conductivity, and reduced protein levels in the cell membrane during half-life.
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Classify whether each given factor would increase or decrease heart rate. - Bundle branch block
- Calcium channel blockers - Exercise
- SA node damage
- Vagal tone - Sympathetic stimulation - Cutting the vagus nerve - Psychological stress
Cutting the vagus nerve, sympathetic stimulation, exercise, psychological stress cause an increased heart rate whereas vagal tone, SA node damage, calcium channel blockers cause a decreased heart rate.
Heart rate, also known as the pulse rate is basically the frequency of the heartbeat which is measured by the number of contractions of the heart which take place per minute and is known as beats per minute, or bpm.
The heart rate can be measured with the help of ECG or electrocardiogram. An electrocardiogram basically records the electrical signals of the heart. It is a common as well as painless test which is used to quickly detect any possible heart problems and also monitor the heart's health.
Vagal tone, SA node damage, calcium channel blockers cause a decreased heart rate whereas cutting the vagus nerve, sympathetic stimulation, exercise, psychological stress cause an increased heart rate.
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A man treated his home with a pesticide that kills roaches. the first application of the pesticide killed 92% of the roaches. two months later he applied the pesticide to his home again, but the second application killed only 65% of the roaches. what would best explain the decrease in the effectiveness of the pesticide?
The pesticide-resistance trait was inherited by the roaches that survived and passed on to their progeny.
Various pests, including insects, weeds, rodents, bacteria, fungi, and others, can be controlled by the use of pesticides. Because pests have evolved resistance over time, which results in a marked decline in sensitivity to a pesticide, many pesticides have gradually lost their efficacy and consequently performed less well in the field. Resistance-related problems worry EPA. In our opinion, a crucial component of sustainable pest control is the management of the emergence of pesticide resistance, which should be done in conjunction with alternative pest-management techniques and integrated pest management (IPM) programs. We are starting a more extensive effort and series of initiatives aimed at preventing and slowing the development of pesticide resistance in order to address the growing issue of resistance and maintain the useful life of pesticides.
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Which one of the following statements about RNA processing is true?
a. RNA splicing can be catalyzed by tRNA
b. Introns are cut out before mRNA leaves from the nucleus
c. RNA polymerase removes exons from the pre-mRNA
d. A pre-mRNA is often much shorter than the final mRNA molecule that leaves from the nucleus
During RNA processing, the introns are cut out before the mRNA leaves the nucleus.
The option b is the correct option.
RNA processing is the term which is used collectively in order to describe the sequence of events due to which the primary transcript from a particular gene acquires its mature form. Soon after the synthesis by RNA polymerase II begins, the transcripts from the nuclear protein-coding genes happen to acquire a 5′ cap structure.
The introns get removed from primary transcripts by a process of cleavage which occurs at conserved sequences called splice sites. These introns must be removed before the given mRNA is sent out of the nucleus of the cell so it can be used to direct protein synthesis. This process of removing the introns from the transcript and then rejoining the coding sections or the exons, of the mRNA, is known as splicing.
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Which feature is shared between adherens junctions and desmosomes?
a. Both contain cadherins
b. Both connect the intermediate filaments of neighboring cells
c. Both connect the actin cytoskeleton of neighboring cells
d. Both promote contraction of a cell layer
e. Both provide physical strength to a cell layer
Both adherens junctions and desmosomes possess the ability to join the actin cytoskeleton of nearby cells.
Eukaryotic cells have a cytoskeleton, a network of filaments or fibers, in their cytoplasm (cells containing a nucleus). The cytoskeleton coordinates other cell components, keeps the cell's form, and controls the movement of the different organelles inside the cell as well as the movement of the cell itself. The cytoskeleton's constituent filaments are so tiny that it was only possible to see them thanks to the electron microscope's higher level of resolution.
Actin filaments, microtubules, and intermediate filaments are the three main types of filaments that make up the cytoskeleton. Actin filaments can be found in a cell as meshworks or bundles of parallel fibers; they aid in the cell's structure and adhesion to the substrate. The actin filaments' dynamic arrays enable the cell move and mediate particular processes inside of it, like cell cleavage during mitosis.
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which body system pulls on the bones of the skeletal system to allow movement?
Answer: The muscular system
Explanation:
fertilizers are classified as which kind of water pollutant. true or false
Bacteria and other organic pollutants from sewage, fertilizers, agricultural runoffs, forestry, food processing, tree and brush debris, industrial waste, and other sources are considered organic water pollutants.
Water bodies can get contaminated by human activity, commonly referred to as aquatic pollution, which has a negative effect on how the water is used. 6 Bodies of water include aquifers, reservoirs, lakes, rivers, oceans, and groundwater. Water contamination happens when contaminants are introduced into these bodies of water. The four main causes are sewage discharges, industrial activities, agricultural practices, and urban runoff, including stormwater. The two categories are surface water pollution and groundwater pollution (either fresh water pollution or marine pollution). For instance, improperly treated wastewater discharged into natural waters may result in the decline of these aquatic ecosystems.
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The macromolecule that can accomplish the widest range of biological functions are
A. carbohydrates
B. proteins
C. nucleic acids
D. lipids
E. glycolipids
Proteins are the biological macromolecules that can perform the most diverse range of biological tasks. The human body is made up of protein, which may be found in almost every organ, tissue, and body part.
What is a bodily organ?An organ is a group of tissues that together physically create a functional entity with a specific purpose in biology. Several organs include your heart, kidneys, & lungs.
how many organs are present in a body?The body of an adult has a total of 78 major organs. The development of several organ systems depends on the coordination of these organs. The survival of five of these 78 organs is seen to be essential. The kidneys, liver, lungs, heart, and brain are some of these.
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A ____ epithelium is found in areas likely to be subjected to abrasive activities and mechanical stress
Stratified squamous epithelium is located in areas likely to experience mechanical stress and friction.
This type of epithelium is composed of multiple cell layers, with the outermost layer being composed of flattened, dead cells. This layer of dead cells is able to act as a protective barrier against abrasion, providing a tough surface that is impermeable to most substances.
Furthermore, the multiple layers of cells provides greater structural integrity and the ability to withstand greater mechanical stress. This type of epithelium is found in areas such as the skin, the oral cavity, and the esophagus.
The skin is subjected to a variety of abrasive activities throughout the day, such as rubbing against clothing, and the oral cavity and esophagus are subjected to mechanical stress from swallowing and digestion. These areas are therefore well-suited to the protective qualities of stratified squamous epithelium.
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When a semipermeable membrane is placed between two solutions?
Osmosis takes place between two solutions separated by a semipermeable membrane. Osmotic pressure is the required amount of external pressure must be applied in order to stop any net solvent movement across the membrane.
Osmosis is the naturally occurring net movement or diffusion of solvent molecules through a membrane that is selectively permeable, in a direction that tends to balance the solute concentrations on the two sides, from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration). It can also refer to a physical process that uses a membrane that is selectively permeable to separate two solutions with different concentrations (permeable to the solvent but not the solute). Osmosis can be used to your advantage.
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which position of the avidian genome is the first to be executed? use the back and forth buttons to find the first gene that a curved line appears from.
The first position of the Avidian genome to be executed is position 50. In the specific ancestor organism, position 1 is identified as the instruction "w" and the execution path starts on the right of the genome.
The Avidian genome is a set of genetic instructions that dictate the behavior of a particular organism. It is exactly 50 instructions in length, and the execution path starts on the right side of the Avidian genome at position 1. In the specific ancestor organism, position 1 is identified as the instruction "w". This means that the first instruction to be executed is the last instruction in the genome, which is located at position 50. It is important to note that this information is specific to the ancestor organism, and other Avidian genome organisms may have different starting points for their execution paths.
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What produces and secretes releasing and inhibiting hormones?
Answer:
Hypothalamus
Explanation:
It is a form of homeostasis
What bacteria only have the ability to ferment to obtain energy?
Anaerobic bacteria only have the ability to ferment to obtain energy.
To gain energy for development, anaerobic bacteria digest amino acids and carbohydrates. Low free energy relative to aerobic oxidations are the result of the substrate of a fermentation having to act as both an electron donor and acceptor in the absence of oxygen and other inorganic electron acceptors. Up until around ten years ago, it was believed that anaerobes solely utilised substrate level phosphorylation (SLP), a process that could only conserve a portion of the available energy. Anaerobes were therefore considered to be ineffective and inefficient energy savers. This viewpoint was altered by the identification of electrochemical gradients produced by ferredoxin- or biotin-dependent decarboxylations of . Oxidative decarboxylation of 2-oxoacids and the recently discovered flavin-based electron bifurcation produce reduced ferredoxin (FBEB).
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what structural characteristic ensures a slow flow of lymph through a lymph node? why is this desirable?
The anatomical structural characteristic that allows the slow flow of lymph through a lymph node is Lymphatic vessels.
What is the role of lymph node and the types of lymphatic vessels?
The lymph nodes are to filter the lymph before it is reintroduced to the bloodstream.
Types:
Afferent lymphatic vessels carry unfiltered lymph into the node.Efferent lymphatic vessels carry the filtered lymph.Each lymph node has fewer efferent than afferent vessels, which causes a slight stagnation in lymph flow inside the node. It is desirable because it provides time for the node's macrophages to clear out antigens and other debris and for the activation of immune cells.
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A regulatory protein that speeds up transcription is called a _________, while a regulatory protein that slows down transcription is called a __________.
A regulatory protein that speeds up transcription is called a transcription factor, while a regulatory protein that slows down transcription is called a transcriptional repressors.
What is regulatory protein?Transcriptional factors (TFs), a class of regulatory proteins, shield the DNA sequences they bind from nuclease cleavage, greatly enhancing accessibility around their binding sites and over nearby chromatin.
Transcriptional repressors are regulatory proteins that slow down transcription, whereas transcription factors are regulatory proteins that speed it up.
Thus, the answers are transcription factor and transcriptional repressors respectively.
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banting’s method of isolating insulin involved a surgical procedure to tie off ducts in the pancreas, waiting several weeks, then removing the pancreas. true or false
False. In order to prevent the digestive enzymes from damaging the insulin, Banting's method of isolating it involved tying off the pancreatic ducts.
The discovery of insulin and its therapeutic promise for the treatment of diabetes made Canadian medical scientist Frederick Banting famous. Diabetes was a terrible and frequently fatal illness in the early 20th century, and there was no proven cure. Banting and his colleague Charles Best created a technique to separate insulin from the pancreas, which resulted in the first effective use of insulin injections to treat diabetes. Their breakthrough transformed medicine and resulted in countless lives being saved. He received several accolades and medals for his work, including the Nobel Prize in Physiology or Medicine in 1923.
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recall the definition of a microbe. 1.1.b. list examples of microbes. 1.1.c. state some problems with the definition of a microbe. 1.1.d. explain the implications o
a. The definition of a microbe are microscopic organisms b. examples of microbes namely bacteria c. some problems with the definition of a microbe is bacteria cause disease d. The implications both detrimental and beneficial.
Microbes are very small organisms that can only be seen with a microscope. Microbes are everywhere, in the air, in the water, on the ground, and in the environment. Examples of microbes are bacteria, fungi, and viruses.
Some bacteria can cause disease because they become parasites or pathogens by taking nutrients from the host cells they inhabit. They infect the human body through various ways such as entering through the mouth or through food. One of the implications of harmful microbes, namely Salmonella typhosa, can cause typhoid. A person who gets sick from this bacteria will experience diarrhea, fever, bleeding in the intestine and even die. However, some microbes can also provide benefits, such as Lactobacillus sp. which is used for the process of making yogurt milk and cheese milk.
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Genes can be activated by the environment to change an organism's fur coat color from white to brown. What factor of the environment causes this change?
Answer: There are multiple. Light, temperature and pollution are what I believe you're looking for.
Explanation: Factors such as light, temperature and pollution could permanently alter our DNA and gene expression, particularly as climate change continues. Similarly, drugs and chemicals can alter gene expression. All of the above are considered environmental factors.
please use the figure of the two sets of force curves to answer the question. a higher myosin atpase activity would change the curve or curves within which set? group of answer choices
A higher myosin ATPase activity would change the curve or curves in set 2.
What is myosin?The first molecular motor, myosin, is a protein that transforms chemical energy in the form of ATP into mechanical energy to produce force and movement.
a fibrous protein that contributes to the motion of other cell types and, along with actin, helps form the contractile filaments of muscle cells. Myosins are a class of motor proteins well recognized for their functions in the contraction of muscles and a variety of other eukaryotic motility processes.
The size of the myosin heavy chain (MHC), which makes up about 25–30% of all muscle proteins, is crucial for skeletal muscle growth.
A superfamily of proteins known as myosin binds actin, breaks down ATP, and transmits force. So, the majority are found in muscle cells.
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what cellular structure do antibiotics typically target? what cellular structure do antibiotics typically target? cell membranes cell walls mitochondria vacuoles
In general, bacteria have three primary antibiotic targets: the membranes or cell wall that encloses the bacterial cell. the equipment used to create DNA and RNA, two types of nucleic acids. The equipment that makes proteins (the ribosome and associated proteins)
The peptidoglycan molecule's synthesis is hampered by penicillin. The peptididoglycan molecules connect tightly, giving the bacterial cell its strength and avoiding cytoplasmic leakage. The cell wall of almost every bacterium is made of peptidoglycan.
Therefore, protein synthesis, nucleic acid synthesis, and the synthesis of biological metabolic compounds are among the targets of antibacterial medications, according to their mechanism of action.
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how do we know that chromosomes exist in homologous pairs? select the two correct statements. how do we know that chromosomes exist in homologous pairs?select the two correct statements. the arm ratio for all chromosomes in homologous pairs is different for each individual. the length of nearly all chromosomes from somatic cells of the same species makes it possible to match the chromosomes in pairs. centromere placements of all chromosomes from somatic cells of the same species differ from each other. centromere placements of nearly all chromosomes from somatic cells of the same species allow matching the chromosomes in pairs. gametes from the same species contain the same number of pairs of chromosomes.
The length of nearly all chromosomes from somatic cells of the same species makes it possible to match the chromosomes in pairs.
Centromere placements of nearly all chromosomes from somatic cells of the same species allow the matching of the chromosomes in pairs.
What are Chromosomes?
DNA-containing structures called chromosomes are in charge of transmitting genetic information from one generation to the next. They are found in pairs in the nucleus of a cell. Each human cell contains 46 chromosomes that are divided into 23 pairs. Genes, which are DNA sequences that code for certain features like eye color, hair color, height, and other inherited traits, are found on chromosomes. Chromosomes are necessary for the healthy development and operation of an organism as well as for cell division and optimal cellular function.
A few essential components make up the chromosomes' distinct structure. There are two long arms called q arms and two short arms called p arms on each chromosome.
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suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous?
[tex]p^2 + 2pq + q^2 = 1[/tex]The number of babies to have brown eyes and heterozygous is 49.
What is hardy-weinberg equilibrium?The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
[tex]p2 + 2pq + q2 = 1[/tex]
Blue eyes (bb) = 32% = 0.32
Out of 100, 32 will have blue eyes.
So, bb = 0.32
[tex]\sqrt[2]{q2}[/tex] = [tex]\sqrt{0.32}[/tex]
[tex]q[/tex] = [tex]0.566[/tex]
[tex]p+q = 1[/tex]
[tex]p + 0.566 = 1[/tex]
[tex]p = 1 - 0.566[/tex]
[tex]p = 0.434[/tex]
[tex]p^2 + 2pq + q^2 = 1[/tex]
So, heterozygous Bb = [tex]2pq[/tex]
= [tex]2 * 0.434 * 0.566 = 0.4913[/tex]
The number of babies = [tex]100 * 0.4913 = 49%[/tex]
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which four elements make up the bulk of living cells?
The four elements that make up the bulk of living cells are carbon, hydrogen, oxygen, and nitrogen.
All organic compounds, including the main biological molecules of cells including carbohydrates, lipids, proteins, and nucleic acids, are built on the basis of carbon.
The second most prevalent element in living cells is hydrogen, which forms bonds with other elements to produce a variety of biological compounds, including lipids and carbohydrates.
The process by which cells transform the energy held in glucose into a form that can be utilized by the cell, known as cellular respiration, requires oxygen, making it a vital component of life.
Nitrogen: Nitrogen plays a crucial role in the construction of numerous biological components, such as the amino acids that make up proteins and the nucleotides that make up DNA and RNA.
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why does genetic drift have more of an impact on the evolution of small populations than large ones? small populations are affected more by stabilizing selection. small populations have greater rates of mutation.
Genetic drift have more impact of evolution of small populations than larger ones because Small population are more effected by random events.
Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Additionally, it can make previously uncommon alleles far more common and even fixed. The severity of drift and the incidence of inbreeding in the population are related to population size, or more precisely, the effective population size. Due to stochastic sampling error, small populations typically lose genetic diversity more quickly than large populations (i.e., genetic drift). This is because small populations make it more likely for some gene variants to be lost as a result of random chance. Additionally, people are more inclined to breed with close relatives when the population is smaller. Individuals in closed populations will have closer ties to one another than those in the generation before.
Although inbreeding and drift have different mechanisms for the loss of genetic diversity, both have the same effects on populations. Both inbreeding and drift decrease genetic diversity, which has been linked to a higher risk of population extinction, a slower rate of population growth, a decreased capacity to adapt to environmental change, and a decreased capacity for disease resistance. These effects have an effect on the capacity of released individuals to survive and procreate in the wild.
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Complete question is:
why does genetic drift have more of an impact on the evolution of small populations than large ones?
A. small populations have greater mutation rates.
B. Small populations are more affected by stabilizing selection.
C. Small populations are more prone to migration.
D. Small populations are less affected by mutation.
E. small populations are more affected by random events.
based on what you observed in this lab exercise, compare the use of and the general growth seen in broths and agar plates. why might you choose one over the other type of medium in future lab exercises
By using the broth, we can identify the type of bacteria present. But using agar plates can help us learn more about certain bacteria.
Media is a material consisting of a mixture of nutrients used to grow microorganisms in culturing bacteria, fungi, and other microorganisms.
Media type:
Broth is used to grow microbes when fresh cultures or large numbers of cells are required for microbial identification.Differential media broths are used in microbial identification.Slant agar is used to grow stock cultures which can be refrigerated after incubation and maintained for several weeks.Many differential media are so skewed.Layered media are used to obtain species isolation, differential testing, and calculate bacterial densities.Learn more about media of bacteria at https://brainly.com/question/12904839
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one end of a trna contains the _____________ while the other contains ________________.
One end of a tRNA contains the anticodon while the other contains the amino acid attachment site.
A tRNA, also known as transfer RNA, is a small RNA molecule that functions as an adapter between the mRNA sequence and the amino acid sequence that is assembled during protein synthesis. One end of a tRNA molecule contains a specific sequence of three nucleotides, called the anticodon, which recognizes and base pairs with a codon on the mRNA molecule. The other end of the tRNA contains a site where the amino acid specified by the codon on the mRNA is covalently attached. The ribosome then reads the mRNA sequence, recognizes the codon, and adds the appropriate amino acid to the growing polypeptide chain through the tRNA molecule.
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Which chamber of the heart contracts to send blood to the pulmonary artery and lungs?
The right ventricle contracts to pump blood to the lungs and pulmonary artery.
The two principal arteries leaving the right ventricle of the heart are known as the pulmonary arteries. Low-oxygen blood is seen in this lower chamber of the heart. This blood travels to the lungs through the pulmonary arteries. The blood there absorbs more oxygen and exhales carbon dioxide.
The right ventricle, the chamber of the heart that pumps blood into the lungs, cannot pump blood into the lungs if the main pulmonary artery is entirely blocked; this condition is known as "right ventricular failure," and it results in PE-related death. Critical elements include the afflicted person's age and health.
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a population is solely comprised of 174 a2a2 individuals. 23 a1a1 individuals migrate in and contribute to the mating pool. what is the frequency of a1a2 individuals in the offspring? answer to 2 decimal places.
The frequency of a1a2 individuals in the offspring would be approximately 10.20%.
To determine the frequency of a1a2 individuals in the offspring, we need to know the frequency of each alleles (a1 and a2) in the population before and after the migration of the 23 a1a1 individuals.
Before the migration, the frequency of a2 allele in the population is 100% (174 a2a2 individuals). After the migration, the frequency of a2 allele is:
(174 a2a2 individuals + 23 a1a1 individuals) / (174 + 23) = 174 / 197 = 88.3%
And the frequency of a1 allele is:
23 / 197 = 11.7%
To determine the frequency of a1a2 individuals in the offspring, we need to know the proportion of each type of gamete that will be produced. Assuming the population is large and mating is random, the frequency of each type of gamete will be equal to the frequency of each allele in the population. So, the frequency of a1a2 offspring will be:
0.883 x 0.117 = 0.102 (or 10.20%)
Therefore, the frequency of a1a2 individuals in the offspring would be approximately 10.20%.
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