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  • Harper Hall——Studied at the University of Zurich, Lives in Zurich, Switzerland.

    Most cases of mosaic trisomy 9 occur due to a random event during the formation of the reproductive cells (egg and sperm) or after fertilization has taken place. An error in cell division (called nondisjunction ) may cause some eggs or sperm to have an abnormal number of chromosomes .read more >>
    +119962023-04-27 18:06:04

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