Consider that the gene pool of a certain animal population contains just 2 alleles for the gene that controls hair color. If the frequency of the H allele is 0.39, what percent of the population is homozygous for H (i.e. HH)?

In a certain breeding population, it is known for certain that only 9.8% of the individuals are "true-breeding" for the dominant phenotype. What would be the predicted frequency of individuals that are "true-breeding" for the recessive phenotype?

Consider a population with  28 individuals with the genotype AA and 12 Aa individuals and 50 individuals with the genotype aa how many alleles in this population in total?

A given autosomal locus has three possible alleles (A1, A2, and A3). Assuming that the numbers of individuals with the six possible genotypes are as follows, what would be the frequency of the A1 allele in the population?   A1A1 = 30 A1A2  = 27 A2A2 = 12 A1A3 = 17 A2A3   = 10 A3A3 = 4 What would be the frequency of the A1A2 genotype? Assume the population is under Hardy-Weinberg equilibrium.   A. 0.03   B. 0.107   C. 0.27   D. 0.317   E. 0.09   F. 0.182

Consider the disease phenylketonuria (PKU), which is an autosomal recessive defect in the enzyme phenylalanine hydroxylase. The absence of the enzyme prevents phenylalanine from being metabolized causing unusually high levels of phenylalanine in the body leading to severe mental retardation. The selection coefficient for the recessive homozygous individuals is 0.7 and the frequency of the recessive allele in the population is 1.0 x 10-2.  If PKU is maintained by mutation-selection balance what is the predicted mutation rate?  The actual mutation rate is 1 X 10-4. What other mechanism might be affecting the allele frequency?

A population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1 A2 genotype, and 123 have the A2A2 genotype. What is the allele frequency of A1? Answer to 2 decimal places.

Consider an autosomal locus with alleles A and a. If the the allele frequencies are as follows Freq(A) = 0.4, Freq(a) = 0.6. , then what is the predicted frequency of heterozygous Aa individuals, assuming the population is in Hardy-Weinberg equilibrium? Freq(Aa) = ? Enter a number between 0 and 1, inclusive, for example 0.33

The ability to taste the chemical compound PTC (phenylthiocarbamide) is coded for by a single gene with two alleles. Let T stand for the allele that codes for tasting and t for the allele that codes for non-tasting. This allele exhibits complete dominance, such that heterozygotes can also taste PTC. Suppose that out of a population of 100 students, 70 are tasters. Estimate the allele frequencies and the frequencies of TT, Tt and tt genotypes in the population. Show all your work, and clearly state your logic and any assumptions you make in estimating the frequencies