The mother won't have to worry so much about so-called Rh incompatibility, which can be lethal to a fetus.
"It could be argued that in human populations there is a point of balance between the disadvantages associated with inbreeding versus those with outbreeding," said Alan Bittles, director of the Center for Human Genetics at Edith Cowan University in Western Australia. A Family Affair Stefansson and his colleagues studied more than 160,000 Icelandic couples going back 200 years, starting with those born in 1800, using the de CODE Genetics genealogical database.
A similar pattern showed up for women born between 19.
And though considered somewhat of a cultural taboo, mating between "kissing cousins" makes good biological sense, say scientists.
The findings, which come from a recent study of Icelanders, shed light on how relatedness affects reproduction and ultimately the size of families.
Vince's Diner opened in 1968, proudly serving his Mama Rosa's famous Red Gravy & meatballs for only $1!
Our Cousin Vinny's dream was to bottle his Mama Rosa's love & feed the world, both young & old.
Forbidden Love The newly discovered positive link between closely related couples, called consanguinity, and offspring is clouded by social norms.