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Identical and Fraternal

There are identical and fraternal.

Fraternal twins happen when 2 different embryos start growing at the same time, so you get a brother and a sister or 2 sisters or 2 brothers that are the same age.

Identical twins happen when 1 embryo splits into 2 embryos when it is only a few cells big, so both babies have the same genes.

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14y ago

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