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, wrinkled seeds, if the two alleles assort independently, what is the probability that an offspring will have smooth, yellow seeds?
A) 0
B) 9/16
C) 3/16
D) 1/16
E) 1/4

Question

Quizplus · Accepted Answer

The cross between two heterozygous plants for both traits (YyRr x YyRr) results in a 9:3:3:1 phenotypic ratio for the offspring. The phenotype for smooth, yellow seeds corresponds to the genotype Yyrr or YYrr, which falls into the 3/16 category of the ratio, representing the offspring with a dominant allele for yellow seeds and recessive alleles for smooth texture.

In Pea Plants, Yellow Seed Color Is Dominant to Green