Qstnid -I-5- Define And Design A Test - Cross? - 05: Principles Of Inheritance And Variation - Neet-xii-biology

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NEET-XII-Biology

05: Principles of Inheritance and Variation

Qstn# I-5 Prvs-Qstn Next-Qstn

#5
Define and design a test - cross?

Ans : Test cross is a cross between an organism with unknown genotype and a recessive parent. It is used to determine whether the individual is homozygous or heterozygous for a trait.

If the progenies produced by a test cross show 50% dominant trait and 50% recessive trait, then the unknown individual is heterozygous for a trait. On the other hand, if the progeny produced shows dominant trait, then the unknown individual is homozygous for a trait.