If the sperm of two or more men were metaphorically put in a blender and prepared for artificial insemination, isn’t it possible to have twins with two dads? Has there ever been a documented case? Further, what would those twins be called? The word “fraternal” implies that both babies would have the same parents.
In: 6
Fraternal twins, yes. Identical twins, no.
Fraternal twins are produced when two eggs are fertilized by two sperm. These sperm could come from two different donors. Identical twins come from one fertilized egg that splits and develops into two embryos. That egg that split would only have been fertilized by one sperm from one donor.
Latest Answers