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  4. To determine whether F1 hybrid is homozygous or heterozygous for a particular trait cross is performed.

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Q. To determine whether F1 hybrid is homozygous or heterozygous for a particular trait ________ cross is performed.

MHT CETMHT CET 2017Principles of Inheritance and Variation

Solution:

Crossing of $F_1$ individual having dominant phenotype with its homozygous recessive parent is called test cross. The test cross is used to determine whether the individuals exhibiting dominant characters are homozygous or heterozygous