A Test Cross

question 15

Multiple Choice

A test cross

• A) is used to determine if an organism that is displaying a dominant trait is heterozygous or homozygous for that trait.
• B) is used to determine if an organism that is displaying a recessive trait is heterozygous or homozygous for that trait.
• C) causes the loss of hybrid vigor.
• D) results in an F₂ generation with a phenotypic ratio of ³/₄ dominant to ¹/₄ recessive.
• E) results in the same alleles being transferred from generation to generation.

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Definitions:

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