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Oliga [24]
4 years ago
8

Suppose a population is carrying a condition controlled by two alleles: A (dominant) and a (recessive). Only homozygous individu

als that have two copies of the recessive allele have the condition. If the a allele has a frequency of 20%, and the A allele had a frequency of 80%, what percentage of the population will have the condition? A. 64% B. 4% C. 80% D. 20%
Biology
2 answers:
Kipish [7]4 years ago
7 0
The answer is the option B. 4%
To have two copies of the recessive a allele, consider acquiring the a allele twice as two independent events (multiply probabilities).

(.2)(.2) = .04 = 4%
laila [671]4 years ago
3 0
B. 4% Is the answer.
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