Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

Identical twins who were raised apart may have IQ differences similar to those of total strangers, according to new research. The findings suggest that variations in IQ may be less about genetics and ...

Real talk: Plenty of devoted, detail-obsessed parents mix up their own twins sometimes. It's hard to avoid when there are two cute babies in matching onesies rolling around on the same play mat. But ...

ROCHESTER, MI — Kelly and Kimberly Standard have been living together for 36 years. “It’s a true blessing to have her around me,” said Kelly Standard, motioning to her twin sister sitting beside her. ...

"We speak our own twin language." If you think you’re seeing double when scrolling on your Instagram Explore feed, your eyes aren’t fooling you. Identical twins like Alicia and Alexa Montes, known as ...