From identical to fraternal and beyond. One of the first things pregnant people wonder is whether or not they'll have twins.

Mirror twins are a type of identical twins whose physical characteristics line up when they're facing each other, like ...

When 30-year-old mother Heather DeWild went missing, her husband Daniel, and his twin brother, David, were the prime suspects ...

IVF can also potentially produce twins as more than one ovum can be inserted into the uterus. Semi-identical twins occur when a single egg is penetrated by two different sperm. This is a rare ...

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 ...

Home of the despicable House Frey, the Twins is also the location of the infamous Red Wedding. While we hated the Freys, we ...

Research on twins helps answer questions about many aspects of being human. About three or four in every 1000 births are identical twins. There are different types of twins, identical and ...

When the dust settled on the 2024 Minnesota Twins draft, nine of the final 10 selections made were pitchers. Logan Whitaker ...

Royce Lewis and Jose Miranda could return later this week in Detroit, and Carlos Correa has a target return date in mind.

Dizygotic twins share about 50% of their genetic traits, the same as any other siblings born at different times. A new type of semi-identical twinning was identified in 2007. These semi-identical ...