Imagine a cross between AA and Aa individuals. What is the genotypic ratio among the offspring?
A) one-half AA and one-half aa
B) one-half Aa and one-half aa
C) one-half AA and one-half Aa
D) all AA

Question

Quizplus · Accepted Answer

When an AA individual and an Aa individual mate, their offspring can be either AA or Aa. Therefore, the genotypic ratio among the offspring is one-half AA and one-half Aa. There is no possibility for all offspring to be AA, so option D is incorrect. Option A and B do not take into account the possibility of the Aa genotype.

Imagine a Cross Between AA and Aa Individuals