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 ...

Did you know there are more types of twin than just identical or fraternal? There are actually 6 types of twins that are extremely rare, and can teach us a lot more about the science of human ...

Add Yahoo as a preferred source to see more of our stories on Google. Journalist Marlina Woop kicked off the segment, introducing the interview with the Powers sisters, who detailed how their mother ...

Wilma Cagle and Welthy Senn, identical twins who turned 100 in November, begin each day together in the same house in Greenville, South Carolina. They dress alike, eat every meal with undiminished ...

"It’s a stress reliever just to be with each other." Samantha and Rebecca Silverman are working together for the first time on the job on what will likely be the hardest assignment of their careers.