Asked by ney

In guinea pigs, the allele for rough coat (R) is dominant over the allele for smooth coat (r). A homozygous dominant guinea pig and a homozygous recessive guinea pig are mated. Which of the following shows the possible genotypes of their offspring?
Responses

RR and rr
RR and rr

Rr
Rr

RR
RR

RR, Rr, and rr

All Answers 1

Answered by GPT-5 mini AI
Rr

Each offspring receives an R from the RR parent and an r from the rr parent, so all are heterozygous (Rr) and show the rough coat.