Born as fraternal twins, my sons may actually be identical. At 23, they don't want to know — and I've learned to accept the ...

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 typical ...

File this under extremely rare but scientifically possible: Twins born to parents of different races can look so different ...

You can have three babies that are identical (if one egg splits into three embryos), three babies that are fraternal (if three separate eggs are fertilized), or two babies that are identical and one ...

For the best experience, please enable JavaScript in your browser settings. Scientists describe twins as two beings who share the same uterus at the same time. They ...

What is clear is that the Measles, Mumps and Rubella Vaccine and the vaccine preservative thimerosal are not causal factors.

I never believed in love at first sight until I met my now-husband. I couldn't recognize him from his identical twin brother over the phone. We ended up having fraternal twins, and I got to experience ...

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 ...

NASSAU COUNTY, Long Island (WABC) -- They say twins have a special connection and for these twins there's no doubt. "Super excited of course. It's a great honor to be named 'Val' and 'Sal" together," ...

Jedidiah Duggar and Katelyn Nakatsu were the first Duggar couple to welcome twins. They announced their big news and held a gender reveal for both babies. Welcoming two little girls was something Jed ...