Awesome twins! Twice as sexy.

Awesome twins!

Twice as sexy.

A twin is one of two offspring produced in the same pregnancy. Twins can either be identical (in scientific usage, "monozygotic"), meaning that they develop from one zygote that splits and forms two embryos, or fraternal ("dizygotic") because they develop from two separate eggs that are fertilized by two separate sperm.
Twins are estimated to be approximately 1.9% of the world population, with monozygotic twins making up 0.2% of the total - and 8% of all twins...

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