In pea plants,the gene for round seed (R)is dominant,and wrinkled seeds (r)are recessive.The endosperm of the pea is also either starchy,a dominant gene (S),or waxy (s).What CANNOT be said of a cross between two parents that are heterozygous for both traits?
A)It is possible to secure offspring that are homozygous for both dominant genes.
B)It is possible to secure offspring that are homozygous for both recessive genes.
C)It is possible to secure offspring that are homozygous for one dominant gene,such as round seed,and homozygous recessive for the other recessive waxy gene.
D)It is possible to secure offspring that are heterozygous for both genes.
E)It is impossible to secure offspring that are homozygous for both dominant genes.

Question

Quizplus · Accepted Answer

If both parents are heterozygous, then each parent has one dominant and one recessive allele for both traits. This means that there is a possibility of producing offspring with a range of genotypes, including homozygous dominant, heterozygous, and homozygous recessive for each trait. However, it is not possible to produce offspring that are homozygous for both dominant genes (RRSS) because each parent only has one dominant allele for each trait.

In Pea Plants,the Gene for Round Seed (R)is Dominant,and Wrinkled