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? asked in Science & MathematicsBiology · 8 years ago

biology question please help! 10 point to best answer!?

two people with polydactyly have a normal child. if they have another child what is the probability it will also have the normal number of fingers and toes??

2 Answers

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  • JazSinc
    Lv 7
    8 years ago
    Favorite Answer

    25%

    polydactyly is autosomal dominant

    Pp x Pp => PP Pp Pp pp

  • Anonymous
    8 years ago

    Same for each child because it is an autosomal trait. Depending on genotypes of the parents, the chances vary. In this case both parents are heterozygous for the trait ( Aa) so each child has a 25% chance for being normal. 50% chance of being heterozygous and showing the trait and 25% homozygouse showing the trait.

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