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Of 1000 people at equilibrium, 40 are recessive homozygotes. How many are expected to be AA?
A640
B320
C160
D800
Answer & Solution
Correct answer: A. 640
q^2 = 40/1000 = 0.04, so q = 0.2 and p = 0.8; p^2 = 0.64, which is 640 of 1000 people.
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