Test cross in plants or in Drosophila involves crossing

A) between two F1 hybrids

B) between two genotypes with recessive trait

C) between two genotypes with dominant trait

D) the F1 hybrid with a double recessive genotype

Answer: D) the F1 hybrid with a double recessive genotype

Explanation: Test cross involves crossing a plant showing dominant trait with the homozygous recessive genotype. The genotype of F1 hybrids showing dominant characteristics can be determined by the test cross.

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