Question

if a parent with genotype aa is crossed with a parent with genotype aa, what genotype and phenotype will the offspring have? all offspring will have aa genotype and exhibit the dominant phenotype. all offspring will have aa genotype and exhibit the recessive phenotype. offspring will be a mix of aa and aa genotypes. 50% of offspring will exhibit the recessive phenotype, and 50% the dominant phenotype.

Explanation:

When a parent with genotype AA is crossed with a parent with genotype aa, each parent contributes one allele. The AA - parent can only contribute A, and the aa - parent can only contribute a. So all offspring will have the Aa genotype. Since A is dominant over a, the offspring will exhibit the dominant phenotype.

Answer:

All offspring will have Aa genotype and exhibit the dominant phenotype.