• Question: what are twins

    Asked by xwinterchickx to Tom, Dalya on 19 Jun 2011.
    • Photo: Dalya Soond

      Dalya Soond answered on 16 Jun 2011:

      2 babies that share a mothers womb. They can be identical (sharing the exact same DNA because they split off from the same egg/sperm fertilization) or non-identical (different DNA because 2 separate eggs were fertilised by 2 separate sperms).

    • Photo: Tom Crick

      Tom Crick answered on 19 Jun 2011:

      A twin is one of two offspring produced in the same pregnancy: twins can either be identical (called “monozygotic“), meaning that they develop from one zygote that splits and forms two embryos, or fraternal (“dizygotic“) because they develop from two separate eggs that are fertilised by two separate sperm.

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