Identical twins result from a single fertilization to form a zygote,which then splits into two genetically identical embryos.

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Identical twins are formed from a single fertilization event followed by the splitting of the resulting zygote into two genetically identical embryos. This is known as monozygotic twinning. In contrast, fraternal twins result from the fertilization of two separate eggs by two separate sperm and are therefore not genetically identical.

Identical Twins Result from a Single Fertilization to Form a Zygote,which