Sarah and Aimee Charlwood are identical twins. They didn't spend a day apart until they were 16. They share the same ...

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

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 ...

The mom was 20 weeks pregnant when she discovered that her twins, Graylen and Chaysen, had twin-to-twin transfusion syndrome.

Twin sisters Verla Starkey, left, and Merla Swenson look at a book of their family history at their home in Kaysville on Wednesday. | Laura Seitz, Deseret News Verla Starkey and Merla Swenson like to ...

RALEIGH, N.C. (WNCN) — Identical twins share a bond like no other, and for Gloria Lipman and Bernice Frank, that bond goes back a century. This weekend, the twins celebrated their birthday and shared ...

CHICAGO | Identical twins Kelly McCarthy and Kristen Maurer have shared a lot in their lives so when one was diagnosed with breast cancer, she urged the other to get tested, too. "You just do ...

Perth identical twins Edward and Ethan Chen live vastly different lives due to a tragic, devastating pregnancy complication.

The twins are small, neat and almost identical, with a habit of finishing each other’s sentences. Confusing one for the other ...

From Romulus and Remus—the myth of the twin brothers who founded the city of Rome—to the synchronized speech of Australia's "Twinnies" Paula and Brigette Powers, identical siblings have long inspired ...