The sepia gene determines eye color in fruit flies and has two alleles - the dominant wild-type allele causes red eyes while the recessive mutant allele causes brown eyes. If a true breeding male fruit fly with red eyes is crossed with a true breeding female fruit fly with brown eyes, all the offspring would have red eyes since the wild-type allele for red eyes is dominant.

1. The sepia gene determines eye colour in Drosophila. It is located on an autosome and has two
alleles; the wild-type allele, which codes for red eyes, is dominant to the mutant allele, which
codes for brown eyes. If you crossed a true breeding male fruit fly with red eyes to a true
breeding female fruit fly with brown eyes, what colour of eyes would all their offspring have?
Select one: a. Some offspring have brown eyes, some offspring have red cross out eyes. b. All
males have red eyes, all females have brown eyes. cross out c. All offspring have red eyes. cross
out d. All males have brown eyes, all females have red eyes. cross out e. All offspring have
brown eyes. cross out