The similarities may be uncanny, but identical twins aren't exact copies of one another ...

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 ...

For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical twins—those born with the same genetic blueprint—have long been the perfect ...

When I was a child one of my favorite books was about a pair of identical twins who decided to switch clothes. They looked so much alike that their parents had had to dress one in blue and the other ...

An identical twin commits a crime and leaves their DNA at the scene. Can DNA testing reveal which twin is the culprit? This question reportedly came up in a case in France last month, in which the DNA ...