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Hi , My Dad has a twin Sister . I was a twin but my twin didn't develope into full form . My mom miscarried that one . Probably every family has a set included in their family tree
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32.21 of every 1,000 births. So I guess about three percent would be the answer but I did like the "All of them that have them" answer!
All of them that have them. :) Just being funny. Don't know how to answer that question. I would say 2 in 10 for a lucky guess or 1 in 5 for simple terms.
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