Fraternal twins Avery and Emersyn Davis, who were born three days apart, got to go home this week after spending over four months in the NICU Maria Pasquini is the senior news editor for the human ...

Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...

What's the meaning of fraternal ... says. Twins do seem to enjoy each other's company starting in the womb. One study found ...

A twin pregnancy is when there are two fetuses in the uterus at the same time. Twins can be identical, meaning they developed when a single fertilized egg split early in development, or fraternal ...