2.Assume a population is in Hardy-Weinberg equilibrium for a given genetic autosomal trait. What proportion of individuals in the population are heterozygous for the gene if the frequency of the recessive allele is 1%?

3.About one child in 2,500 is born with phenylketonuria (an inability to metabolize the amino acid phenylalanine). This is known to be a recessive autosomal trait.a.If the population is in Hardy-Weinberg equilibrium for this trait, what is the frequency of the phenylketonuria allele?

ii..02X100=2%iii.The frequency is 2%b.What proportion of the population are carriers of the phenylketonuria allele (that is, what proportion are heterozygous)?

4.In purebred Holstein cattle, about 1 calf in 100 is spotted red rather than black. The trait is autosomal and red is a recessive to black.a.What is the frequency of the red alleles in the population?

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