Double Cousins A double cousinship occurs only when a set of siblings marries another set of siblings and both have children. This could be two sisters marrying two brothers. In your case, this is a brother and sister marrying a sister and brother. A double cousins

Can two pairs of siblings marry?

If one pair of siblings is married to another pair of siblings, the siblings-in-law are thus doubly related, each of the four both through ones spouse and through ones sibling, while the children of the two couples are double cousins.

What happens when 2 siblings have a baby together?

The risk for passing down a genetic disease is much higher for siblings than first cousins. To be more specific, two siblings who have kids together have a higher chance of passing on a recessive disease to their kids.

Are double cousins siblings?

As you can see, double cousins are more genetically related than first cousins because they share not only their maternal DNA, but also their paternal DNA (grey vs. yellow). In other words, double first cousins share the same amount of DNA that you would share with a grandparent, a half-sibling or an aunt or uncle.

How do I call elder brothers wife in English?

Your brothers wife, no matter what his age, is called a sister-in-law.