A purebreeding orange fish is crossed with a purebreeding br

A pure-breeding orange fish is crossed with a pure-breeding brown fish. Their offspring are all brown. When these F1 fish are crossed among themselves, they produce 32 brown fish and 10 orange fish. What are the possible genotypes of the F2 brow n fish? Be sure to define your symbols clearly. A brown fish is involved in a test cross, which produces 30 brown fish and 30 orange fish. What are the genotypes of the parents and offspring?

Solution

2. A brown fish...............Bb crossed to a recessive parent................bb

	B	b
B	Bb(brown)	Bb (brown)
b	Bb(brown)	bb (orange)