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- In the Ireland, 9% of the population is red haired. Assuming mating is random, what is the frequency of heterozygotes in Ireland?
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- Johnston et al. estimate that 50% of males with the Ho Ho genotype develop scurs (instead of full horns). They also estimate that around 13% of the total male population, at birth, will develop scurs. The males who managed to get access to mating opportunities with females seem to show no preference for whether the females have horns or not. Thus in the adult mating population, mating is random with respect to the genotype at this locus. What is the frequency of the Hop allele in the population?You are observing a grouse population in which two feather phenotypes are present in males. One is relatively dark and blends into the shadows well, and the other is relatively bright and more obvious to predators. The females are uniform dark feathered. Observing the frequency of mating between females and the two types of males, you have recorded the following: Mating’s with dark feathered males: 13 mating’s with a bright feathers male: 32 Propose a hypothesis to explain why females apparently prefer bright feathered males. What selective advantage might there be in choosing a male with alleles that make it more susceptible to predation? What data would help test this hypothesis?In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?
- A population has the following gametic frequencies attwo loci: AB = 0.4, Ab = 0.1, aB = 0.1, and ab = 0.4. Ifthe population is allowed to mate at random until linkage equilibrium is achieved, what will be the expectedfrequency of individuals that are heterozygous at bothloci?suppose 25 out of 750 students are redheads. what is frequency of redheads? if a random student is choosen, what is the probability they are a redhead?In a population of 500 individuals in Near East, the frequencies of the dominant and recessive alleles for autosomal recessive genetic disease PKU are 0,89 and 0,11 respectively. A is used to indicate the dominant allele, a is used to indicate the recessive allele. Assuming random mating, what are the expected genotype frequencies?
- In a Lebanese population, the frequency of the IO allele is 0.67, while the frequency of the D allele (Rh locus) is 0.6. The two loci are independently assorting. What is the frequency of individuals with blood type O+? Assume mating in the population is randomHartnup disease is an autosomal recessive disorder of intestinal and renal transport of amino acids. The frequency of affected newborn infants is about 1 in 14,000. Assuming random mating, what is the frequency of heterozygotes? Provide summationAbout 7% of men in a population are red-green colour blind due to a sex-linked recessive gene. Assuming random mating in the population with respect to colour blindness; What percentage of men would be colour blind in the next generation?
- How Can We Measure Allele Frequencies in Populations? In a population where the females have the allelic frequencies A = 0.35 and a = 0.65 and the frequencies for males are A = 0.1 and a = 0.9, how many generations will it take to reach HardyWeinberg equilibrium for both the allelic and the genotypic frequencies? Assume random mating and show the allelic and genotypic frequencies for each generation.A population is solely comprised of 152 A2A2 individuals. 7 A1A1 individuals migrate in and contribute to the mating pool. What is the frequency of A1A2 individuals in the offspring?After five generations of random mating, what is the frequency of the a allele?