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What is the difference btween identical twins and fraternal twins?

In: Genetics, Probability, Multiple Births [Edit categories]

Answer:

Identical twins are the result of a single fertilized embryo splitting in two at an early stage and forming two viable embryos. As such, identical twins have identical DNA.

Fraternal twins are the result of two distinct fertilized embryos being viable. As such, they have different DNA. They could even be different sexes.

First answer by Alex146. Last edit by Alex146. Contributor trust: 420 [recommend contributor ]. Question popularity: 1 [recommend question].

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