When Gabrielle Taylor shared a TikTok about how her identical twins were labeled “Twin A” and “Twin B” before birth, she ...

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 ...

After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...

Twins are taking over! These days, around 31 out of every 1,000 babies born in the U.S. are twins, according to the Centers for Disease Control and Prevention (CDC). Back in 1980, only about 19 in ...

Twins may often make you imagine two babies with the exact physical features, such as eyes, smile, and even voice. However, this is not the case with every twin, as some look totally different from ...

These babies are identical twins, but their mom has no trouble telling them apart. “People say, ‘The doctors lied to you. Your twins aren’t identical,’” Danielle Marple of Venice, Florida, tells TODAY ...

Twins easily communicate with each other, which has good and bad consequences. Parental favoritism can create competition, ...

My identical twin sons have been fiercely competitive with each other from toddlerhood. Their rivalry helped them thrive on the sports field, but brought tension in academics. Although they now attend ...