Lupe grows pea plants in her garden. The pea plants have flowers that can be either purple or white, with purple color being domersant to white color. The peas produced by Lupe's pea plants can also be either round or wrinkled, with round peas being dominant to wrinkled peas.

Question

Lupe crosses two pea plants that are heterozygous for both traits. If a gamete from this cross receives a dominant allele for flower color, how does this influence the probability of the gamete receiving a dominant allele for pea shape?

(Assume that the genes for flower color and pea shape follow the law of independent assortment)

A. It causes the gamete to be unable to receive a dominant allele for pea shape.

B. It decreases the probability that the gamete will receive a dominant allele for pea shape

C. It has no effect on the probability of the gamese receiving a dominant allele for pea shape.

D. It increases the probability that the gamete will receive a dominant allele for pea shape.

Answer 1

The correct answer is C. It has no effect on the probability of the gamete receiving a dominant allele for pea shape.

Since the genes for flower color and pea shape are inherited independently (following the law of independent assortment), the inheritance of one trait does not influence the inheritance of the other. Therefore, whether or not a gamete receives a dominant allele for flower color has no impact on the probability of it receiving a dominant allele for pea shape.