Refer to the figure below, and then answer the question that follows.

-In a dihybrid cross,if heterozygotes are crossed,what fraction of the offspring is expected to have both the dominant phenotypes?

Question

Refer to the figure below, and then answer the question that follows.
 
-In a dihybrid cross,if heterozygotes are crossed,what fraction of the offspring is expected to have both the dominant phenotypes?

Quizplus · Accepted Answer

In a dihybrid cross involving heterozygotes (AaBb x AaBb), the fraction of offspring expected to have both dominant phenotypes (A- B-) is 9/16, according to the Punnett square analysis. This is because there are 9 combinations out of 16 total that exhibit both dominant traits.

Refer to the Figure Below, and Then Answer the Question