A scientist discovered the genetic basis of color variation in the medaka that i

Question

A scientist discovered the genetic basis of color variation in the medaka that is a small fish. Genes at two loci (B, b and R, r) determine the color of the fish. If the fish have a dominant allele at both loci (B -/R -), they are brown. Fish with a dominant allele at the B locus only (B-/rr) are blue. Fish with a dominant allele at the R locus only (bb/R-) are red and fish with recessive alleles at both loci (bb/rr) are white. For the given parental genotypes, determine the offspring genotypes. Show all work. a. Bbrr X bbrr b. Bbrr X BbRr c. BbRr X bbRr

Explanation / Answer

Given that-

BB/RR- brown

BB/rr- blue

bb/RR- red

bb/rr- white

a. BbrrX bbrr

b. Bbrr X BbRr

c. BbRr X bbRr

Br Br br br br Bbrr Bbrr bbrr bbrr br Bbrr Bbrr bbrr bbrr br Bbrr Bbrr bbrr bbrr br Bbrr Bbrr bbrr bbrr

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