Twins...! :D

Twins are just one example of  multiple births where more than one baby is born in the same pregnancy while two babies are referred to as twins  each higher baby total has its own special name usually based on the Latin name for that number so three babies are called triplets four are called quadruplets five are caller quintuplets...!

With fraternal twins one or both of the fertilized  eggs can themselves split resulting in one fraternal and two identical siblings or two pairs of identical twins and with identical twins one or both of the original split cells can also split resulting in identical triplets or quadruplets...!


There are many different kinds of such disorders  of sex development sometimes instead  of the normal XY or XX pair of chromosomes...!