Question

Mating an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called

• A. reciprocal cross
• B. test cross
• C. back cross
• D. dihybrid cross

Answer 1

The correct option is B test cross

Test cross: It is cross between an organism and the recessive parent in order to determine whether it is homozygous or heterozygous for a character under consideration.

Reciprocal cross: It is a cross between a male of one strain and a female of another, and vice versa. It is used to determine if the trait is sex linked.

Back cross: It is a crossing of a hybrid with one of its parents in order to achieve offspring which is closer to that of the parent.

Dihybrid cross: It is a cross between two different genes that differ in two observed traits.