Fraternal twins come from two separate fertilized eggs that develop ... Twins may find comfort in each other's company, for example, and feel a need to be close to one another. Moms in the BabyCenter ...

Geneticists used to think that identical twins don't run in families, because the splitting of the fertilized egg happens ...

For example, twin studies have shown us the approximate heritability of type 1 and type 2 diabetes, schizophrenia, and different types of cancer (e.g., Castillo-Fernandez, Spector, & Bell, 2014).

I was on the Today Show today, May 7, 2008. The taped session focused on studies from two separate laboratories. The first study concerned research on twins’ social relationships, conducted in ...

The author (not pictured) married an identical twin and had fraternal twins. Courtesy of the author I had an emergency C-section and gave birth to my twins early at 35 weeks.

Doctors have identified a third type of twins -- somewhere between identical and fraternal -- after performing extensive genetic tests on two children.

My twins do not fall into most of the stereotypes of twins. For one thing, they don't look anything alike because they are fraternal . It always baffles people, and me quite frankly, when I have ...

The mother, identified only as "T.M." gave birth to twin girls in January of 2013 and named A.S., a romantic partner, as the father of both kids when applying for public assistance.