My twin sister and I are fraternal. Fraternal twins are two eggs that were fertilized and developed at the same time. In other words, they are no more genetically alike than any other siblings. read more
Fraternal twins do not have the same genetic makeup. In identical twins, one egg is fertilized, and is then split into two, resulting in the same genetic makeup and chromosomes. This is why identical twins are the same gender. read more
Quite paradoxically, identical twins may not always look exactly alike even though they share the same genetic make up. Environmental factors may cause their appearance to evolve differently as early as inside the mother's womb. read more
Fraternal twins can be different genders because they are two completely different eggs getting fertilized; but even two same gender fraternal twins do not look completely alike. Whereas for identical twins since one egg is splitting into two, the two cells have the same exact DNA make up and chromosomes. read more