Conquer the Kaplan Nursing Entrance 2025 – Prep, Practice, and Prosper!

To determine the expected genotype of the offspring from a cross between a heterozygous male (genotype Aa) and an albino female (genotype aa), it is essential to understand the inheritance of the trait involved.

In this case, normal pigmentation is dominant over albinism. The heterozygous male carries one allele for normal pigmentation (A) and one for albinism (a), while the albino female carries two alleles for albinism.

To visualize the possible genotypes of the offspring, we can set up a simple Punnett square:

- The alleles from the male are A and a.

- The alleles from the female are a and a.

When we fill out the Punnett square, we get the following combinations for the offspring:

- From A (male) and a (female): Aa (normal pigmentation)

- From a (male) and a (female): aa (albino)

The results from the Punnett square indicate that there is a 50% chance of producing offspring with the genotype Aa (normal pigmentation) and a 50% chance of producing offspring with the genotype aa (albino).

Thus, the expected ratio of offspring would indeed be 50% normal pigmentation and