Question

Which is correct :-

• A. Each back cross is test cross
• B. Each test cross is a back cross
• C. Crossing $F_2$, with $F_1$ is called test cross
• D. Crossing $F_2$ with $P_1$ is called test cross.

Answer 1

Answer: (B)

A.Each back cross is test cross – False, because, each test cross is back cross.

B.Each test cross is back cross – True.

C.Crossing F₂, with F₁ is called test cross – False, because, crossing of F1 hybrid with homozygous recessive parent is called Test cross.

D.Crossing F₂ with P₁ is called test cross – False, because, crossing of F1 hybrid with homozygous recessive parent is called Test cross.

So, the correct optio is ‘Each test cross is a back cross’.