A pea plant with yellow peas is crossed with a pea plant that has green peas. The offspring include both yellow-pea and green-pea plants. The original plant with yellow peas must, therefore, have what genotype?

Question

Quizplus · Accepted Answer

This is a classic example of a cross between two heterozygous individuals (one with Yy and one with yy). The Punnett square for this cross would result in 50% Yy (yellow) and 50% yy (green) offspring. Therefore, the original plant with yellow peas must have had a genotype of Yy.

A Pea Plant with Yellow Peas Is Crossed with a Pea