Question

explain back cross and test cross????

Answer 1

hi i am aarya your answer is here



Back cross is a cross of a hybrid with one of its parents or any individual genetically similar to its parent in order to achieve offspring with genetic identity closer to that of the parent



whereas a test cross is a type of back cross between the recessive homozygote and F1 generation.

Answer 2

Back cross- When F1 individuals are crossed with one of the two parents from which they were derived, then such a cross is called a back cross.

In such back crosses, when F1 is back crossed with the parent having dominant characters (phenotype), no recessive individuals are obtained. Again when crossed with recessive parent, both phenotypes appear in the progeny.

Test cross- A test cross is a cross used to test whether an individual is homozygous ie pure or heterozygous ie hybrid. It is always crossed with a recessive parent.