A student proposes that left-handedness is a recessive trait that is therefore hidden in much of the human population. A survey of 36 students finds that 27 (0.75) are right-handed and 9 (0.25) are left-handed. Using the Hardy-Weinberg equation, what would the expected genotype and allele frequencies be in this theoretical population?

Question

Darby

Biology

28 September, 11:37

A student proposes that left-handedness is a recessive trait that is therefore hidden in much of the human population. A survey of 36 students finds that 27 (0.75) are right-handed and 9 (0.25) are left-handed. Using the Hardy-Weinberg equation, what would the expected genotype and allele frequencies be in this theoretical population?

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Carter Leon · Answer 1

0.25 right-handed homozygous, 0.50 heterozygous, and 0.25 recessive homozygous for a 0.5 allele frequency for each allele

Explanation:

In the Hardy-Weinberg equilibrium equation is (p²+2pq+q²=1),

the term 2pq represents the genotype frequency of heterozygotes (Aa) in a population in equilibrium. the term p² represents the frequency of dominant homozygotes (AA) and the term q² represents the frequency of recessive homozygotes (aa).