This means t hat rather than having 46 chromosomes you constitute 47. This is the cause for approximately ninety- five per centum of the people bear on by Down syndrome. The extra chromosome is usually found on the twenty-first pair. The next cause only affects 1 percent of the Downs population. It is cognise as mosaicism. This is caused from an error during cell division undecomposed after(prenominal) conception has occurred. It has been seen that with mo...If you want to get a practiced essay, indian lodge it on our website: OrderCustomPaper.com
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