But not all twins are born alike. Some are fraternal, and others are identical. So what's the difference, anyway? Here's the scoop on the various types of twins and multiples. Identical twins ...

Mono-mono twins are an incredibly rare type of identical twins who share both a placenta and an amniotic sac. While this makes for a high-risk pregnancy, advances in monitoring and treatment have ...

Identical twins share the same gender—boy-boy ... Mixed-gender twins are the most common type of fraternals, some 50 percent are boy-girl. To understand this combination: Males have XY ...

The 24-year-old Danish brothers are the first set of twins to play in the same Masters tournament. Nicolai played last year ...

Identical twins Caleb and Jeremy Baker married identical twins Brooklyn and Kristen Stutler, respectively, on March 14 in a back-to-back ceremonies, They honeymooned together in Mexico, and will ...

Daniella Gray is a Newsweek Family & Parenting Reporter based in London, U.K. Her focus is on family dynamics, childhood development, parenting styles, U.S. education and current trends in family ...

These types of pregnancies may also be referred to as monochorionic ... Roughly one-third of all twins will be identical and two-third non-identical, per the NHS. More than 60% of twin are born ...