Identical twins occur when a single fertilized egg splits into 2. It's considered to be a random anomoly - so nobody really knows why the egg decides to split.
Fraternal twins (dizygotic twins) are simply two fertilized eggs that are implanted in the uterus at the same time. Identical twins (monozygotic twins) is one fertilized egg that separates into two...
Fraternal twins (and other multiples) occur when the female ovulates more than one egg at a time and more than one is fertilized. Females that are overweight or older are more likely to ovulate more...
Identical twins are formed by the separation of the same embryo containing same genetic coding. thus the the twins are identical as formed from the same embryo. But this is not the case in the...
There are two types of twins.One type is that twins are same, and other type is that not identical.For identical type, ovum meet two sperm at the same type.(The meaning of identical is that you can...