Botany · 2013
NEET 2013 · 18 May · Code Y · Q40
Down's syndrome in humans is due to:
Down's syndrome in humans is due to :
Official answer
(4)
Three copies of chromosome $\displaystyle 21$
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NEET (UG) 2013 Botany question, with the answer from NTA’s final answer key. Where our answers come from.