Question

In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed homozygous fly (RR) and a red-eyed heterozygous fly (Rr) mate together, what are the possible genotypes of their offspring?

Answer 1

if the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive.

The possible of their offspring if Rr mates with rr is :

The third option, Rr and rr

hope this helps

Answer 2

R R

R| RR RR

r |Rr Rr

I tried to type out a punnet square Lol