Red-green color blindness is an X-linked trait. In a population genetics study, 1,000 people (500 men and 500 women) were tested for this trait, and 35 men were found to be color blind
Use this information to compute the frequency of the allele for color blindness and the wild-type allele in this population, and estimate the expected number of carrier females.
35/1,000 = 0.035 = q; this is the frequency of the trait in this population. Since p = (1 - q) = (1 - 0.035 ) = 0.965, you can use p and q to compute 2pq at 2(0.035 )(0.965 ) = 0.068; this is the frequency of heterozygotes, which can only be female. This gives an estimated 33 female carriers in this population.
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