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Moderate

Prairie Chicken Genetics

APBIO-Q1KGHO

In prairie chickens, the gene for throat sac size shows simple dominant-recessive inheritance. A recessive allele causes small throat sacs, and a dominant allele causes large throat sacs. In a certain population of chickens, 264 chickens show the recessive phenotype, and 788 chickens show the dominant phenotype.

What is the frequency of the homozygous recessive genotype?

A

0.75

B

0.5

C

0.25

D

1