Question

A common test to find the genotype of a hybrid is

• A. Crossing of one $F_2$ progeny with male parent
• B. Crossing of one $F_2$ progeny with female parent
• C. Studying the sexual behaviour of $F_1$ progenies
• D. Crossing of one $F_1$ progeny with recessive parent

Answer 1

The correct option is D Crossing of one $F_1$ progeny with recessive parent

A test cross is the crossing of F${}_1$ progeny to the recessive parent. It is used to find genotype of the progeny. In the case of homozygous tall, all the progeny is obtained are tall while in the case of heterozygous tall, 1/2 is tall and 1/2 progeny is a dwarf.

So, the correct answer is option D.