Question

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

Explanation:

Step1: Identify dominant and recessive

Tough seeds (R) are dominant, smooth seeds (r) are recessive. Smooth - seeded plants have the recessive phenotype.

Step2: Determine genotype for recessive phenotype

For a recessive phenotype, the genotype must be homozygous recessive. Since smooth - seeded plants have the recessive trait, their genotype is rr.

Answer:

A. rr