The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism)are
A)phenotypes:all normal; genotypes:50% homozygous dominant and 50% heterozygous.
B)phenotypes:50% normal and 50% albino; genotypes:all heterozygous.
C)phenotypes:75% normal and 25% albino; genotypes:75% heterozygous and 25% homozygous.
D)phenotypes:all albino; genotypes:50% heterozygous and 50% homozygous recessive.

Question

Quizplus · Accepted Answer

In this cross, all offspring will have at least one dominant allele (A), resulting in normal pigmentation. The genotypes will be a 1:1 ratio of AA (homozygous dominant) to Aa (heterozygous).

The Genotypes and Phenotypes That Result from a Cross of AA