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 ...

The mom was 20 weeks pregnant when she discovered that her twins, Graylen and Chaysen, had twin-to-twin transfusion syndrome.

Cinematic-MRI shows twins vying for legroom in utero. Dec. 3, 2012— -- Sibling rivalry can apparently begin even before birth and researchers in London have remarkable footage of twins fighting ...

What's the meaning of fraternal twins? Fraternal twins come from two separate fertilized eggs that develop in the womb at the ...

When we think of identical twins, we often imagine mirror images — same face, same smile and perhaps even the same talents. But what surprises many is that these genetic carbon copies can have ...

KIRKLAND, Wash. (KOMO) -- Identical twin brothers are off to a very unusual start in life. One is in the Neonatal Intensive Care Unit, born extremely prematurely. The other is still in the womb and ...

When identical twins Chaysen and Graylen were in their mother Jessica Proudfoot’s womb, doctors discovered the beginning of the rare and sometimes deadly Twin-to-Twin Transfusion Syndrome where one ...

Twin fetuses endanger each other's life within the womb. July 29, 2008— -- After two and a half years of marriage, Kim and Nate Stroh of Humble, Tex., got the good news on New Year's Day that Kim ...

A new study shows that what happens to a fetus in the womb can affect the brain later in life. In a paper recently published in Human Brain Mapping, a team of researchers from the Quebec-based ...