Question

What is the cross between progency f1 and the homozygous reccesive parent caled ?How is it useful?

Answer 1

Answer:

Cross between f1 progeny and recessive parent is called Test Cross.

it is used to determine the trait(whether it is homozygous or heterozygous) of parent cross with homozygous recessive (here f1 progeny) .

if one of the progeny appear recessive then trait is heterozygous, but

if no progeny appear recessive then trait is homozygous (dominant).