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The Recessive Allele That Causes Phenylketonuria (PKU)is Harmful, Except When

Question 48

Multiple Choice

The recessive allele that causes phenylketonuria (PKU) is harmful, except when an infant's diet lacks the amino acid phenylalanine. What maintains the presence of this harmful allele in a population's gene pool?


A) heterozygote advantage
B) stabilizing selection
C) diploidy
D) balancing selection

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