You are a geneticist studying a population of 100 barn swallows. You are particularly interested in one gene, and upen examining the alleles present, you find one allele is quite common, accounting for 80 of the alleles in this population. What is the frequency of this allele in the population?
Q: Which combination(s) of genotype frequencies is/are possible in this population? List all that are…
A: According to Hardy Weinberg principle, in a large and random mating population, gene pool/allele…
Q: 500 pea plants are growing in your garden. 400 of them are yellow, with half of them being…
A: Hardy Weinberg principle is applied to the fixed populations.
Q: The frequency of the R allele for round seeds in a certain population of 500 peas was found to be…
A: The question is related to Hardy Weinberg Equilibrium. p is the dominant allele. q is the recessive…
Q: You are a biologist interested in the variation in the body size of Florida sea turtles. You krnow…
A: We have, Total number of turtles = 100 Large bodied turtles = 84 Small bodied turtles (recessive) =…
Q: How would you calculate the allele frequencies fora two-allele trait in a population if given the…
A: Measuring the allele frequency gives an insight about the prevalence of an allele in the population.…
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A: Hardy-Weinberg Equilibrium is a concept that serves as a benchmark for researchers to analyze gene…
Q: If the frequency of gene "J" in a population is 0.7 and this gene is completely dominant over its…
A: Given: Frequency of gene "J" in population = 0.7 "J" gene is completely dominant over its single…
Q: Which of the following mathematical formulas is correct in how to calculate allele frequencie a…
A: Hardy weinberg theorem states that the frequencies of alleles and genotypes in a population's gene…
Q: You are studying three populations of birds. Population A has ten birds, of which one is brown (a…
A: Genes control the genetic characteristics of an organism. Genotype is the genetic characteristics…
Q: In what situation would the allele frequency of a population NOT change? A. when individuals move…
A: Allele frequency - It is a measurement of a particular allele in a gene pool of a population at a…
Q: In a Hardy-Weinberg population wit two alleles, A and a, that are in equilibrium, the frequency of…
A: According to the Hardy-Weinberg equilibrium, the allelic frequencies in a population remain constant…
Q: In a population of pea plants, there were 20 pea plants with white flowers (pp), 160 were…
A: Hardy-Weinberg equation can be referred to as the calculation that can be utilized to find the…
Q: Is it possible to calculate any of the genotype frequencies in a population just by counting? If so…
A: Genotype frequency in a populace is the quantity of indiviual with a particular genotype divided by…
Q: In the formula for determining a population's genotype frequencies, the "2" in the term 2pq is…
A: Hardy-Weinberg equilibrium It is when both allele and genotype frequencies in a population remain…
Q: A recessive lethal allele has achieved a frequency of 0.22 due to genetic drift in a very small…
A: Hardy–Weinberg equilibrium , states that in the absence of other evolutionary influences allele and…
Q: A population consists of 7 mice. For the coat color trait, there are only two alleles: brown (B) and…
A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…
Q: long or short, with long tongues being the dominant trait. 64% of individuals have tongue. In a…
A: Hardy Weinberg Equilibrium : A principle statin that both allele and genotype frequencies in a…
Q: What is the allele frequency of the a allele in a population with 15 AA homozygotes, 10…
A: There are certain formulas that can be used to find the genotypic and allelic frequencies of…
Q: The sum of all genes and their alleles in a given population is defined as OGene pool OGene…
A: A gene pool is defined as the total genetic diversity found within a population or a species.
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A: According to the given condition, an insect species has two types of legs, one has black striped…
Q: Imagine a population of raccoons in which food-washing behaviour is controlled by the W locus. WW…
A: Population of racoon possess three genotypes:- a)WW b)Ww c) ww Number of individuals with WW…
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Q: A population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1A2 genotype,…
A: A gene is the functional unit of inheritance. Each gene of an individual consists of two alleles.…
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Q: In a population of fish, gold scales are dominant to black scales. A fish population of 100 total…
A: Using the Hardy-Weinberg equation the given question can be solved. In 1908, G. H. Hardy and…
Q: In genetics, what does the term population mean? Pick any species you like and describe how its…
A: Genetics is a branch of biology, dealing with differences and resemblances of related organisms…
Q: Tay Sach's disease, an inherited recessive disorder (allele = r), causes degeneration of the nervous…
A: The Hardy-Weinberg principle talks about the Hardy-Weinberg principle which states that the genetic…
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A: Hardy Weinberg equilibrium suggests that the population is ideal. There are not found any selection,…
Q: What are the frequencies of allele D and d in a population that has individuals with the following…
A: According to Hardy-Weinberg principle, gene frequencies will remain constant if all conditions i.e.…
Q: If after studying a population for a trait determined by a single pair of alleles you find that the…
A: Population genetics involves the study of genetic difference within the population. It involves the…
Q: If a population has gene frequencies of p=0.52 and q=0.48, what will be the genotype frequencies in…
A: Group of individuals of the same species inhabiting a specific geographical area is called a…
Q: If both the forces of mutation and natural selection are acting on this population from generation…
A: Allele frequency remain constant if both the forces of mutation and natural selection is acting on…
Q: The figure below show the frequency of an allele (A) in 4 populations (numbered 1-4) over time.…
A: Answer: Population 3. As shown in the figure the frequency of allele A for the population-3 remains…
Q: Consider a finite population in which individuals carry two alleles at a particular genetic locus.…
A: In population genetics, a gene or allele will be fixed or lost is dependent on the selection…
Q: How do you determine allele frequency? In a population of beetles with distinct phenotypes, you…
A: Total beetles = 100 SS= 49% SA = 42% AA = 9%
Q: A population has 70 EE individuals, 28 Ee, and 2 ee. The frequency of the E allele is
A: This is a question of population genetics which can be solved using Hardy-Weinberg principle.This…
Q: The gel image below shows 7 alleles, let's call them 1-7 in order of size, with 1 being the largest…
A: In agarose gel electrophoresis, DNA fragments are separated according to their size (or the number…
Q: From the same population of dragons. Two alleles B and encoding for phenotypes blue and purple…
A: The Hardy-Weinberg rule states that if mating is random and mutation, selection, immigration, and…
Q: In a population of mountain lions, 9% of the individuals suffer from a disease caused by a recessive…
A: Given: 9% of the individuals suffer from a disease caused by a recessive allele (aa). So, q2 = 9% As…
Q: In a population of mayflies, variation in the STRIPE gene causes different body coloration. SS…
A: In a population of mayflies, variation in the STRIPE gene causes different body coloration. SS…
Q: You are studying a population of mice in a field that have black (genotype BB), dark brown, (Bb) or…
A: There are three types of fur colour having two alleles B and b . These are :- I ) Black :- It is…
Q: If a population has an allele A1 frequency of 0.59 and an allele A2 frequency of 0.41, what is the…
A: A gene is the functional unit of inheritance and it contains two alleles. A dominant gene can be…
Q: Below is a plot of genotype frequencies in a population. Assuming the population is in…
A: Allele Frequency is defined as the number of times that allele is in a population. It is calculated…
Q: The MN blood group is a single-gene, two allele system in which each allele is codominant. Why are…
A: A cross between pure-breeding organisms produces heterozygotes that contain both of the parental…
Q: In a similar population of 1000 bison (but one with different allele frequencies than the one in…
A: Genotypic frequency of bb = 160/1000 = 0.16 allele frequency of b (q) we know, q2 = 0.16 q = 0.4
Q: Suppose that frequency of a recessive phenotype, white fur color, is about 0.16 (16%) in the local…
A: According to Hardy Weinberg`s equilibrium- p2+q2+2pq =1 p = frequency of the dominant allele in the…
Q: What does Hardy-Weinberg test? The robustness of a population Whether a population is evolving…
A: Hardy-Weinberg test states that How many alleles are in the gene pool . It measure whether the…
Q: If all copies of a given locus have the same allele throughout the population, the allele frequency…
A: The relative frequency of an allele at a given locus in a population, represented as a fraction or…
Q: If the frequency of a recessive disease causing allele (q) is 0.1, what is the frequency of…
A: The frequency of recessive disease allele (q) = 0.1 The inbreeding coefficient (F) = 0.25 F= p + q…
Q: For Wright- Fisher population with 500 of population size, it was found that frequency of allele b…
A: Probability of an allele to be fixed in Wright-Fisher population.
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- 26. Snow geese (Chen caerulescens) come in two color types, white “snows” and “blues” with dark bodies. A single gene controls coloration, where the dark (“blue”) allele (D) is dominant. A population of 30,012 geese includes 9236 dark individuals. Genetic testing reveals that 7636 of the 9236 dark individuals are heterozygous (Dd). What is the actual frequency of allele D? 0.819 0.181 0.435 0.34725., Snow geese (Chen caerulescens) come in two color types, white “snows” and “blues” with dark bodies. A single gene controls coloration, where the dark (“blue”) allele (D) is dominant. A population of 30,012 geese includes 9236 dark individuals. Genetic testing reveals that 7636 of the 9236 dark individuals are heterozygous (Dd). How many individuals are dd? 7636 13140 1600 207761.)The frequency of the R allele for round seeds in a certain population of 500 peas wasfound to be 0.45. How many of them were wrinkled? How many of them had the rr genotype? How many of them were round? 2.)In humans, a dominant allele controls the formation of a cleft chin, a Y-shaped fissurein the chin caused by an atypical bone formation in the mandible (this phenotypeis also known as a chin dimple). A survey of 1200 college students found that108 of them did not have a cleft chin. What was the frequency of heterozygotes inthat student population?
- 167 10. (5) You have sampled a population of lady beetles, in which black spots (B) is dominant to no spots (b). You know that the percentage of individuals with the homozygous recessive genotype is 32%. Use that information to calculate the genotype frequency of the BB genotype and the Bb genotype.9. 8. The two histograms represent the frequency distribution for the two different types of variation. Q R 10. A B Which of the statements, A to D, about characteristic Q is correct? с D controlled by many genes and unaffected by the environment number of organisms controlled by one or two genes and unaffected by the environment controlled by many genes and influenced by the environment Your answer controlled by one or two genes and influenced by the environment A. B. W characteristic C. What evidence is given in the pedigree chart below to establish that the condition is caused by a dominant allele? D. number of organisms Two unaffected parents have unaffected children. Two affected parents have affected children. An affected parent and an unaffected parent have affected children. Two affected parents have an unaffected child. A. 0% B. 25% C. 50% characteristic In fruit flies (Drosophila melanogaster) grey body is dominant to black body and normal wings are dominant to vestigial…14. In class we explored how genotype frequencies can change between generations. In our experiment, we started with a population in which every individual was heterozygous for a few traits of interest. The data for the 11 offspring of these heterozygotes are below. Make sure you show at least some work for partial credit. Frecueles Eje coloN Freckles Genotype FF Eye Shape Genotype EE Eye Color Genotype RR (P 3 (P 3 Ff 5 Ee .0.3 1-0.3 3 RB 7 ff 1 ее Phenotypes Freckles No freckles Phenotypes Phenotypes Red |-0.3 FF, Ff Circle EE, Ee RR Ro.HFF) ff Star ее Purple Blue RB or BR 20.42 BB a) What were the initial allele frequencies for freckles in the starting population? FF=0.42 b) What percentage of the starting population had purple eyes? c) What are the allele frequencies for freckles after one generation? (FF)P= 0.7 (FN 2pf=0.42 (fF) = 03 d) What percentage of the population had purple eyes after one generation? e) Are the genotype frequencies for eye shape what you would expect based…
- 19. You are examining a population of marmots in Yellowstone National Park. Some have black fur and some have a lighter brown. You suspect the same gene that encodes for melanosome density in Labrador retrievers is the cause. You sequence the gene for 250 animals and find only two alleles in the population: BB:89, Bb:125, bb: 36 a. Using the genotype information, calculate the allele frequencies. | b. Test whether this population is likely in Hardy-Weinberg with respect to this locus. (first estimate your expected counts and then do your Chi-square test) Observed (O) 89 125 36 Expected (E) O-E (O-E)² (O-E)²/E1. Imagine a population of 100 snails in which the shell colour is controlled by two alleles: B (black) and b (yellow). (1) What is the total number of loci for shell colour gene in this population? (ii) In the snail population described above, 20 out of the snails are yellow (bb) and 80 are black (BB or Bb). Of the 80 black snails=, 30 are homozygous and 50 are heterozygous. How many loci for this gene are occupied by the B allele? (ii) What is the frequency of the B allele? (iv) Assuming that sexual reproduction takes place with random mating, no gene flow and no selection, what will be the frequency of yellow snails in next generation of the population described above? (v) What will be the frequency of the b allele in the next generation of the snail population described below1. In a population of 1000 bison, there are two alleles at the B locus. It acts incompletely dominantly, so that you are able to figure out each animal's genotype simply by observing its phenotype. How convenient. You find 665 BB, 225 Bb, and 110 bb bison. a) What are the allele frequencies of B and b? (round off the number) b) Using the allele frequencies, what numbers (not just fractions, but numbers of actual bison in this population of 1000 and yes you can round off) would you expect to be BB, Bb, and bb? c) Do you think this bison population is in HW equilibrium? d) No matter what your answer to c, if they weren't in HW equilibrium, name 5 possible reasons why.
- Тext 7. If 96 out of 200 individuals in a population express the recessive phenotype, what percent of the population are heterozygotes? 40% 8. A hypothetical population of 100,000 humans has 68,240 individuals with the blood type AA, 28,735 individuals with blood type AB and 3025 individuals with the blood type BB. a. What is the frequency of each genotype in this population? b. What is the frequency of the A allele? c. What is the frequency B allele? d. If the next generation contained 250,000 individuals, how many individuals would have blood type BB, assuming the population is in Hardy-Weinberg equilibrium?p? + 2pq + q? = 1 (to determine the genotype frequencies) and p+q =1 (to determine the allele frequencies) p = frequency of the dominant allele in the population q = frequency of the recessive allele in the population p = percentage of homozygous dominant individuals q?: = percentage of homozygous recessive individuals 2pq = percentage of heterozygous individuals Homework Problems For these problems you will need to use a calculator and can round for the percentages. the nearest who number Example problem: You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate the following: A. The frequency of the "aa" genotype. Answer: 36% (given) B. The frequency of the "a" allele. Answer: The frequency of aa is 36%, which means that q? = 0.36. If q? = 0.36, then q = 0.6, because 0.62 is equal to 0.36. Since q equals the frequency of the a allele, then the frequency is 60%. C. The frequency of the "A" allele.…2. In humans, MN blood group is determined by a single gene with two codominant alleles, LM and LN. (This is a different blood group system from ABO). In a sample of 1000 Germans, there were 297 type MM 506 type MN 197 type NN A. Determine the frequencies of the LM allele and the LN allele in this population. B. Determine how many people there would be of each genotype if the population were in Hardy- Weinberg equilibrium and use the Chi-squared test to evaluate how well observed data fit expectations.