The recessive allele that causes phenylketonuria (pku) is harmful, except when an infant's diet has appropriate levels of the amino acid phenylalanine. what maintains the presence of this harmful allele in a population's gene pool?
a) stabilizing selectionb) heterozygote advantagec) balancing selectiond) diploidye) x
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The recessive allele that causes phenylketonuria (pku) is harmful, except when an infant's diet has...
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