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Biology 20 Online
OpenStudy (anonymous):

can anyone help with this? it seems like such a simple question but my brain just isn't grasping it. in the US approximately one child in every 10,000 is born with phenylketonuria a syndrome that affects individuals homozygous for the recessive allele. given this incidence what percent of the population are heterozygous carriers of the recessive PKU allele? give answer to the nearest hundredth of a percent

OpenStudy (anonymous):

I think, although I'm not positive it would 2/10,000 because of the parents. The parents would both have to be heterozygous carriers for the child to have it.

OpenStudy (anonymous):

that doesn't make any sense

OpenStudy (anonymous):

Well the only people who would have the heterozygous alleles are the parents of the child. So that's 2 for every one of those children.

OpenStudy (anonymous):

idk. I'm so confused

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