The Science of Siblings is a new series exploring the ways our siblings can influence us, from our money and our mental health all the way down to our very molecules. We'll be sharing these stories ...

After going viral for sharing how doctors told her identical twins apart in the womb, mom of three Gabrielle Taylor opens up ...

We meet a brother and sister who share an oddity and in their family, this quirk is unique to them. Sharing an oddball trait isn't that common with siblings unless you're an identical twin. It is not ...

From what you eat to the size of your family, get clued up on the likelihood that you’re going to need a bigger buggy. Many fertility experts believe twins are more common than we are aware of, it ...

Nathan Kettlewell does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

There’s something fascinating about twins. The idea of two babies growing together often captures people’s curiosity. Many ...

Identical Twins Are Genetically Different, Research Suggests SAN FRANCISCO – Identical twins may not be so identical after all. Even though identical twins supposedly share all of their DNA, they ...

Most twins have two identities: The one they share with their twin brother or sister as part of a pair, and the one that they enjoy all on their own. Most twins enjoy being a twin since it is a ...

Back when they were single, identical twins sisters Venessa and Kerissa Sealby never dreamed they would marry identical twin brothers. Then they met Lucas and Jacob Sealby. During a March 29 ...

The special relationship between twins allows researchers to examine the differences between genetic and environmental influences over both physical and mental health, as well as traits and behaviors.