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2014-12-08T23:19:42+05:30
It affects the 21st chromosomes the vitamin required to produce dna is vitamin B12

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2014-12-09T01:16:24+05:30

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Down Syndrome is caused due to the presence of an additional copy of the chromosome numbered 21. Hence, the affected individual shows this extra copy of chromosome.
Vitamin B12 (Folic Acid) is essential for the production of DNA in human body cells.
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