Two Pure-Breeding Mutant Plants Produce White Flowers

question 22

Multiple Choice

Two pure-breeding mutant plants produce white flowers. When they are crossed, all of the progeny have wild-type purple flowers. What does this genetic complementation tell you?

• A)The genes are part of distinct biosynthetic pathways.
• B)The two lines exhibit different mutations in the same gene.
• C)More than one gene is involved in determining the phenotype.
• D)The allele is pleiotropic.
• E)The allele exhibits incomplete dominance.

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Higher-SES Parents

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