The birth of two babies is not a rare occurrence these days. Over the past 30 years, the number of fraternal and identical twins has grown by 79%. What is the difference between fraternal twins and identical twins?
Fraternal twins are formed when two eggs are fertilized by different sperm cells in the mother's body during ovulation.
As a result, two fetuses with different gene sets develop in the womb. They can be different sexes and differ like siblings born at different times.
The birth of identical twins is a real miracle. The fertilized egg is inexplicably divided into two identical ones. In this case, the kids are of the same sex and look alike.