Twofold

The Singular World of Twins and Twin Studies.
Dr. Nancy L. Segal is a Professor of Psychology and Director of the Twin Studies Center, at California State University, Fullerton. See full bio

More Octuplets: Combinations and Permutations

Octuplets offer amazing research possibilities

Multiple births are a great addition to research addressing genetic and environmental influences on behavior. It occurred to me that the new octuplets offer some amazing possibilities: The eight babies include:

 

28 twin pairs

56 triplet sets

70 quadruplet sets

56 quintuplet sets

29 sextuplet sets

8 septuplet sets

 

They also offer an amazing array of identical and fraternal pairs, as well as same-sex and opposite-sex sets.

 

 



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