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A common test to find the genotype of a hybrid is by

1. crossing of one F2 progeny with female parent
2. studying the sexual behaviour of F1 progenies
3. crossing of one F1 progeny with male parent
4. crossing of one F2 progeny with male parent

Correct answer: crossing of one F1 progeny with male parent

Solution

A hybrid’s genotype is identified by test crossing it with a homozygous parent, so the offspring patterns reveal whether the hybrid is homozygous or heterozygous. Among the options, crossing an F1 progeny with the male parent is the intended test-cross setup.

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