Eye pigment in a particular strain of fly is determined by two genes. an autosomal gene that controls the color of the pigments in the eye has two alleles: a dominant allele ( r ) that results in red eyes and a recessive allele ( r ) that results in sepia eyes. a sex-linked gene that controls the expression of the colored pigments also has two alleles: a dominant allele ( t ) that allows for expression of the colored pigments and a recessive allele ( t ) that does not allow for expression of the colored pigments. individuals without a t allele have white eyes regardless of the alleles of other eye-color genes.
which of the following represents a cross between a white-eyed female and a red-eyed male?
ttxrxr×ttxry
a
ttxrxr×ttxry
b
rrxtxt×rrxty
c
rrxtxt×rrxty
Answers: 1
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