Jill is heterozygous for gene A and is going to have a child with Jack, who is homozygous recessive for gene A. Which of the following offspring genotypes could result from fertilization of a normal haploid sperm with an egg that had undergone nondisjunction in meiosis I? Hint: It may be helpful to sketch the outcome of nondisjunction to solve this problem.

Options are:

A. AAa
B. Aaa
C. aaa
D. Aa
E. aa
F. a

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