Phenylalanine hydroxylase PAH is needed to prevent the accumulation of phenylalanine A lack of functional...
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Biology
Phenylalanine hydroxylase PAH is needed to prevent the accumulation of phenylalanine A lack of functional PAH results in a condition known as PKU which can be fatal in infants if not treated Consider two alleles of PAH the wild type allele functional PAH and a mutant allele non functional PAH What would have to be true in order for the mutant allele to be recessive to the wild type allele O The heterozygote would have a mutant phenotype PKU O A heterozygote will have an intermediate phenotype O The heterozygote would have a wildtype phenotype no PKU
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