Fraternal Nonidentical Twins Types Genes Parenting
Identical, or monozygotic, twins, on the other hand, develop from one egg that’s fertilized by one sperm. The fertilized egg (zygote) then splits after fertilization. Whereas identical twins usually look remarkably alike, fraternal twins can look a lot alike, somewhat alike, or even different. They can also be similar or different in personality or inherited health conditions, depending on each twin’s unique genetic makeup and how they respond to their environment....