Question

in a certain plant, rough seeds (r) are dominant and smooth seeds (r) are recessive. two plants with genotype rr are crossed, and their offspring has smooth seeds. what is the genotype of their offspring? a. rr b. rr c. rr d. rr

Explanation:

Step1: Recall dominant - recessive rule

In genetics, a recessive trait is only expressed when the organism has two copies of the recessive allele. Since smooth seeds (r) are recessive and the offspring has smooth seeds, it must have two recessive alleles.

Answer:

A. rr