Question

Albinism is an autosomal recessive condition. Which circle graph above shows the genotype probability when an albino female
mates with a male that is heterozygous for the albinism trait?
Answer choice F
Answer choice G
Answer choice H
Answer choice J

Answer 1

Answer:

A; Half Aa and Half aa.

Explanation:

If you make a punnett square, the two genotypes will be Aa and aa, each half.

(sorry about the messy pic)

Answer 2

Answer:

Answer choice F

Explanation:

Since albinism is a recessive characteristic, let's assume that it has the "aa" alleles, so an individual who does not have albinism would have the "AA" alleles if he were homozygous and "Aa" if he were heterozygous.

If an albino (aa) female were to mate with a heterozygous, non-albino (Aa) male, we could fill in a punnet squad to determine what the offspring would be like. As we can see in the punnet square attached below, the result of this crossing would be 50% offspring "Aa" and 50% offspring "aa".