41+ Identical Twins Differences Pictures. What's the difference between fraternal twins and identical twins? Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2.

What's The Difference Between Identical And Fraternal Twins?
What's The Difference Between Identical And Fraternal Twins? from www.pregworld.org
They result from the fertilization of a single egg with a single sperm. Identical twinning is officially described as monozygotic. Identical twins, on the other hand, form within the same egg that splits into two, which results in the two individuals having the exact same dna.

And as those cells divide and multiply, at some point very early in embryonic growth they split into two individuals.

They also had an upbringing that accentuated their we now began to look not at the similarities between identical twins but the differences. Identical twins seem to occur randomly. After all, as identical twins, the pair have exactly the same genes. They have the same alleles.