Two parents with the genotype Aa and Aa could produce which of the following combinations in offspring?

Two parents with the genotype Aa and Aa could produce which of the following combinations in offspring?

• A. Only AA
• B. Only Aa
• C. AA, Aa, and aa
• D. Only aa

Answer: (C)

In genetics, when examining the offspring of two parents with the genotype Aa, a Punnett square can be utilized to predict the possible combinations of alleles. Each parent contributes one allele from their genotype to the offspring. In this case, both parents can pass on either the dominant allele (A) or the recessive allele (a). The possible combinations resulting from Aa x Aa are as follows: 1. If both parents contribute the dominant allele (A), the offspring will be AA. 2. If one parent contributes a dominant allele (A) and the other contributes a recessive allele (a), the offspring will be Aa. 3. If both parents contribute the recessive allele (a), the offspring will be aa. When constructing the Punnett square for this cross, the combinations obtained show that the potential genotypes for the offspring are AA, Aa, and aa. Hence, it's clear that the correct answer encompasses all three combinations, which is why it is accurate to state that offspring could be AA, Aa, or aa. This understanding of genetic inheritance is fundamental in predicting probabilities in offspring phenotypes and genotypes.

In genetics, when examining the offspring of two parents with the genotype Aa, a Punnett square can be utilized to predict the possible combinations of alleles. Each parent contributes one allele from their genotype to the offspring.

In this case, both parents can pass on either the dominant allele (A) or the recessive allele (a). The possible combinations resulting from Aa x Aa are as follows:

1. If both parents contribute the dominant allele (A), the offspring will be AA.

2. If one parent contributes a dominant allele (A) and the other contributes a recessive allele (a), the offspring will be Aa.

3. If both parents contribute the recessive allele (a), the offspring will be aa.

When constructing the Punnett square for this cross, the combinations obtained show that the potential genotypes for the offspring are AA, Aa, and aa. Hence, it's clear that the correct answer encompasses all three combinations, which is why it is accurate to state that offspring could be AA, Aa, or aa. This understanding of genetic inheritance is fundamental in predicting probabilities in offspring phenotypes and genotypes.