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torabara torabara
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11 years ago
Do humans have a dominant trait for more than five fingers or are six fingers a dominant trait?
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wrote...
Bronze Member
11 years ago
No!?

We would normally have 6 fingers if so.

Your sub question doesn't make sense as both options are the same.
wrote...
11 years ago
Yes http://www.brighthub.com/science/genetics/articles/47390.aspx
wrote...
11 years ago
Yes, actually! It's called Polydactyly and it is caused by an autosomal dominant allele. Usually the extra digit is just a little extra tissue, but every once and a while  a full functioning finger (or toe) can form!
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