Independent Assortment Predicts a 9:3:3:1 Ratio with Four Different Phenotypes

question 6

Multiple Choice

Independent assortment predicts a 9:3:3:1 ratio with four different phenotypes in the F₂ progeny. If the alleles are epistatic, what would you predict?

• A)more than four phenotypes
• B)fewer than four phenotypes
• C)heterozygotes with a novel phenotype between the dominant and recessive homozygotes
• D)1/3 of the progeny with the dominant phenotypes and 2/3 recessive
• E)no change in the 9:3:3:1 ratio

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