Whether or not a person has cheek dimples is an autosomally inherited character due to variation...
Whether or not a person has cheek dimples is an autosomally inherited character due to variation in a single gene. Having cheek dimples (D) is dominant to not having cheek dimple s(d). In a population of 28,000 Greek children, 3,500 had cheek dimples and the rest did not. Assuming that the population is in Hardy-Weingberg equilibrium,
(A) What are the frequencies of the two allels?
(B) How many of the children do you expect to be heterozygous?
Homework Answers
As mentioned in the figure frequency of D is 1/8
so frequency of d is 1-1/8=7/8
so the frequency of Dd is=2*1/8*7/8=7/32
children heving heterozygous genotype is 28000*7/32=6125
so 6125 children will have heterozygous genotype.
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Whether or not a person has cheek dimples is an autosomally
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