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

question 57

Multiple Choice

In pea plants,the gene for round seeds (R) is dominant,and wrinkled seeds (r) is recessive.The endosperm of the pea is also either starchy,a dominant gene (S) ,or waxy (s) .What can be said of a fully heterozygous,dihybrid cross?

• A)Some offspring could be homozygous for both dominant genes.
• B)Some offspring could be homozygous for both recessive genes.
• C)Some offspring could be homozygous for one dominant gene such as round seed and homozygous recessive for the other recessive waxy gene.
• D)All of these choices are impossible combinations in a dihybrid cross.
• E)All of these choices are possible combinations in a dihybrid cross.