Breeders can use a punnett square, such as the one below, to predict the outcome of a genetic cross. if the genotype of both parents was aa, what would be expected of the genotypes among their possible offspring? half would have the genotype aa. half would have the genotype aa. three-quarters would have the genotype aa. three-quarters would have the genotype aa.

Half would have the genotype Aa.

Explanation:

Given that the genotype of both of the parents was "Aa"; both parents would make two types of gametes. The 50% gametes from each parent would carry allele "A" while the rest 50% gametes from each parent would carry allele "a".

The random fusion of gametes of two parents would give the progeny with genotype ratio 1/4 AA: 1/2 Aa: 1/4 aa.

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