A testcross involves A) two F ₁ hybrids. B) an F ₁ hybrid and an F ₂ offspring. C) two parental organisms. D) an F ₁ hybrid and the homozygous dominant parent. E) an F ₁ hybrid and an organism that is homozygous recessive for that trait.

Question

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A testcross involves crossing an F1 hybrid with an organism that is homozygous recessive for the trait in question to determine the genotype of the F1 hybrid.

A Testcross Involves