For a group that makes up just 0.4 percent of the world’s population, identical twins have enthralled moviegoers.

In that study, Dean Hamer of the National Cancer Institute found that identical twins, who share 100 percent of their genes, were more likely than fraternal ... as skin color and ethnicity ...

An allergic reaction happens when your immune system overreacts to something that should be harmless. Whether that happens ...

Jessica Biel, who portrayed Mary Camden on 7th Heaven, reflected on an odd yet “effective” moment from her audition when she ...

Here again, epigenetic influences and developmental factors in the mother’s womb may influence one twin but not the other. Do some identical twins look different? Created with Sketch.

If one has a reaction to a new food, is the other more likely to as well? BjelicaS/iStock via Getty Images Plus ...

Marvel Rivals is about to drop a hot new update that gives your favorite hero looks a fabulous makeover – and we’re not just talking about a shine and buff. Starting April 17th at 2 AM PDT, a ...

A South African woman shared her ordeal of giving birth to twins 14 days apart and in different provinces. The mother faces a rare case of delivering twin sons in separate provinces with a remarkable ...