When Identical Twins Marry Identical Twins and Have Children (Infographic)

5. 13. 15 by Jaime Trosper

It might sound crazy to some people (maybe even taboo to others), but a pair of identical twins marrying identical twins is called a ‘quaternary marriage.’ Although rare, they do happen. In fact, there are about 250 marriages like this on record (The most famous of which, are Teyolla and Keyolla Loux and their husbands, Shawn and Eric Crow). Unsurprisingly, these couples may even go on to have identical twins of their own.

In either scenario, from a genealogical (not to mention, legal) point of view, any offspring would technically be considered first cousins, but their DNA would be hard to distinguish from that of full genetic siblings. Furthermore, it would be almost impossible to figure out who the biological parents are based on the DNA alone (of course, that explanation is too tidy. There are also other factors that might make formal identification possible).

How can this be? Think about it for one mind boggling moment…

Identical twins share the exact same genetic material, egg/sperm and all (while fraternal twins are conceived from a different egg and sperm). So in this case, the four “sets” of DNA are the same as only two sets.


To explain further;

Biology… you can’t make this s*!& up.

Futurism Readers: Find out how much you could save by switching to solar power at UnderstandSolar.com. By signing up through this link, Futurism.com may receive a small commission.


Share This Article

Keep up.
Subscribe to our daily newsletter to keep in touch with the subjects shaping our future.
I understand and agree that registration on or use of this site constitutes agreement to its User Agreement and Privacy Policy


Copyright ©, Camden Media Inc All Rights Reserved. See our User Agreement, Privacy Policy and Data Use Policy. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Futurism. Fonts by Typekit and Monotype.