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Solve this pedigree please..............................................

Solve this pedigree please..............................................

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Grade:12

1 Answers

Simran Vinaik
askIITians Faculty 1231 Points
4 years ago
Since it is autosomal recessive trait so both parents have to be heterozygous in order to have diseased progeny. In II generation their SON is affected. This is only possible if both parents have one recessive allele i.e. Aa and Aa.

So option 2) is correct

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