Question

in corn, yellow kernel color is governed by a dominant allele; white, by a recessive allele. a random sample of 1,000 kernels from a population in equilibrium reveals that 910 are yellow and 90 are white. what are the frequencies of the yellow and white alleles in this population? what is the percentage of heterozygotes in this population?

Answer 1

yellow frequency=70%, white frequency=30%, percentage of heterozygotes=42%

Step-by-step explanation:

IM HIMM

start with the homozygous recessive percentage if given, which equals q^2.

The frequency of the yellow kernel recessive genotype ww is 9/10 or q^2

q= srq^2 = sr0.09 = 0.30 = the frequency of w

and p+q=1 thus, p=1-q = 1-0.30= 0.70 = the frequency of W

b) the heterozygotes = 2pq = 2(0.70)(0.30) = 0.42 or 42%