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20 July, 23:50

One child of female i-3 has albinism. what is the probability that any of the other four children are carriers of the allele for albinism?

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  1. 21 July, 00:12
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    Albinism is a recessive trait so both parents must have the recessive allele for it to occur. Let A be the dominant allele and a be the albinism allele.

    Parents: Aa x Aa (considering neither were albino)

    Children possible genotypes: AA, Aa, Aa, aa

    Possibility of a child being a carrier: 50%
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