In pea plants, yellow seed color is dominant to green, and wrinkled seed texture is dominant to smooth. In a dihybrid cross between two heterozygous plants with yellow, round seeds, if the two alleles assort independently, what is/are the predicted phenotypic ratio(s) of the offspring?
A) all are yellow and round
B) 8 yellow and round: 8 green and wrinkled
C) nine green and wrinkled: four yellow and round: three green and round
D) nine green and round: three yellow and round: three yellow and wrinkled: one green and wrinkled
E) nine yellow and round: three green and round: three yellow and wrinkled: one green and wrinkled

Question

Quizplus · Accepted Answer

In a dihybrid cross between two heterozygous plants (YyRr x YyRr), where Y is dominant for yellow, y is recessive for green, R is dominant for round, and r is recessive for wrinkled, the expected phenotypic ratio is 9:3:3:1. This ratio represents 9 yellow and round, 3 green and round, 3 yellow and wrinkled, and 1 green and wrinkled offspring, respectively, following the principle of independent assortment.

In Pea Plants, Yellow Seed Color Is Dominant to Green