Identical twins are not as identical as previously assumed, according to a study published today (January 7) in Nature Genetics. Rather than having exactly the same DNA sequences, twins start ...

Parenting twins to be close to one another and good friends who can resolve arguments is very difficult. You can do it with ...

What's the meaning of fraternal twins? Fraternal twins come from two separate fertilized eggs that develop in the womb at the same time, each with their own placenta and amniotic sac. Like any ...

It makes sense that identical twins would have the exact same DNA, right? Spoiler alert: Not always! Here's why. How are identical twins formed? Identical twins (also called monozygotic or MZ twins) ...

Lucy Notarantonio is Newsweek's Senior Lifestyle and Trends Reporter, based in Birmingham, UK. Her focus is trending stories and human interest features ranging from health, pets and travel.

One twin may have a particular medical condition, while the other does not. Here again, epigenetic influences and developmental factors in the mother’s womb may influence one twin but not the other.

and they are the common type of twins. They have their own amniotic sacs and placenta, so are just sharing the womb of the mother, and are therefore not identical. There are few complications with ...

Researchers analyzed Norwegian information on nearly 730,000 Norwegians, including 13,800 twins, born between 1967 and 1978. After controlling for birth weight, maternal education, and other factors, ...

Ms Scofield's son Rory died in the womb at 21 weeks and his brother Daniel lived for just a day after he was born. The two women decided parents who had lost twins and triplets needed a special ...