A test cross
(A) is used to investigate whether the dominant expression is homozygous or heterozygous
(B) involves mating of F1 hybrid with homozygous recessive parent.
(C) both (A) and (B)
(D) none of these
Correct Option -(C) both (A) and (B)
Explanation-
When F1 hybrid is crossed with homozygous recessive parents, it is called a test cross