Use the Following Information to Answer the Questions Below

question 41

Multiple Choice

Use the following information to answer the questions below.
A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (aa) , the same percentage as at the beginning of the breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants.
-You sample a population of butterflies and find that 42% are heterozygous at a particular locus. What should be the frequency of the recessive allele in this population?

• A)0.09
• B)0.30
• C)0.49
• D)0.70
• E)Allele frequency cannot be determined from this information.

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