Question

In peas, yellow seed color (Y) is dominant to green seed color (y). A homozygous green seed pea plant is crossed with a heterozygous yellow seed pea plant. What is the predicted phenotypic ratio of the offspring based on seed color?
50 percent yellow, 50 percent green
50 percent YY, 50 percent yy
100 percent yellow, 0 percent green
100 percent Yy, 0 percent yy

Answer 1

50 percent yellow, 50 percent green

Explanation: yy (green) × Yy (yellow) produces gametes y × (Y or y) → offspring Yy (yellow) and yy (green) in a 1:1 ratio.