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1 vote
How is it possible that the same set of parents can have a baby with the thumb extension trait and a baby without the thumb extension trait

User Tom Seldon
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2 Answers

1 vote
Different strands of DNA are in both parents. One parent can have both the recessive gene and the non recessive gene.
User Alexandru Chirila
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6 votes

it is possible because of different stands of DNA

User Boris Brodski
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