Albinism is a recessive trait, so it occurs in individuals who are homozygous recessive (aa). If a heterozygous (Aa) and homozygous recessive (aa) couple have children, about half of the children would be expected to inherit the recessive allele from both parents and thus express albinism.

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Albinism

Question 88

Multiple Choice

Albinism

A) occurs if an individual is heterozygous (Aa) or homozygous (aa) .
B) would occur in about half of the children if a heterozygous (Aa) and homozygous (aa) couple had children.
C) carriers would have the genotype AA.
D) would occur in all the children of a couple who were (AA) and (aa) .
E) is an X-linked trait in humans.

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