Twin
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From Wikipedia - Reading time: 1 min
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Twins are two offspring produced by the same pregnancy. Twins can either be monozygotic ("identical"), meaning that they develop from one zygote that splits and forms two embryos, or dizygotic ("fraternal"), meaning that they develop from two eggs, each fertilized by separate sperm cells.
- See also Multiple birth.
- For a list of all twins, see List of twins.
- For people who were or are one of a pair of twins see Category:Twin people.
- For other uses of the term Twin, see Twin (disambiguation) and Twins (disambiguation).
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