| Health / Medical Topics |
Meiotic Nondisjunction
The failure of the chromosomes to disjoin and move to opposite poles, may affect as many as 25% of all ova and 2% of all sperm. Half of these abnormal gametes are nullisomy, half are disomy. Two copies of a chromosome pass into the same gamete, leaving the other gamete as nullisomy. 95% of the Down Syndrome birth were result of meiotic disjunction. (NCI Thesaurus)
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