Why don't identical twins look the same?
Identical twins, also called as monozygotic twins, are created when a single egg and sperm pair separates a few days after fertilization . Because their DNA comes from a single source, their genetic composition is same, and their genetically determined qualities will be similar. Except in exceptionally rare situations of chromosomal defects, monozygotic twins are invariably of the same gender. Fraternal, or dizygotic, multiples, on the other hand, occur when two different eggs are fertilised by two separate sperm in a single ovulation cycle . They share around half of their specific genes in a unique combination of genes from both parents, much like any other sibling group. The stereotype about identical twins is that they have been identical in every way: they appear alike, dress alike, and have comparable likes and dislikes. Parents with identical twins, on the other hand, know much better. Despite their genetic similarity, identical multiples are separate group. They have a ...