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GENETIC CLINIC AND DNA TESTING LAB-2

Rare Disease Forum by Genetidoc Genetic Clinic › Forums › Genetic Rare Diseases › Down Syndrome › What causes Down syndrome?

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    • July 24, 2026 at 10:45 am #202
      Sana Fathima K S
      Keymaster

      What causes Down syndrome?

    • July 24, 2026 at 10:45 am #203
      Sana Fathima K S
      Keymaster

      It occurs due to an error in cell division (nondisjunction) that results in an extra chromosome 21. In most cases, this happens randomly during the formation of the egg or sperm and is not inherited from either parent.

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