Scarlett and Ximena Hernandez Ambriz were born conjoined at the pelvis in 2016 alongside their triplet, Catalina, who was not ...

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 ...

For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical ...

Watch: The parents in this viral video aren't afraid to admit that, sometimes, they simply can't tell their twins apart.

"It's awesome and they are so [cute] together." — -- In a happy coincidence, a pair of identical twins have given birth just 20 hours apart in the same hospital. Becky Pistone and her sister, ...

For the best experience, please enable JavaScript in your browser settings. Following the Kakamega twin puzzle that has drawn the attention of the entire country, we ...