twins

Can Twins Have Different Fathers?

In contrast to identical (monozygotic) twins, who originate from a single fertilized egg, fraternal (dizygotic) twins develop from two separate eggs fertilized by two different sperm.

Conjoined twin Abby Hensel, from Abby & Brittany, weds

The twins are now both fifth grade teachers. Abby and Brittany are dicephalus conjoined twins, and share a bloodstream and all organs below the waist. Abby controls their right arm and leg, Brittany controls the left.
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