In Down's syndrome (Mongolism),each cell has | vedclass

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(D) Down's syndrome is a chromosomal disorder caused by the presence of an extra copy of chromosome number $21$ (trisomy of $21$).In a normal human ce

Vedclass · Accepted Answer

$47$

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(D) Down's syndrome is a chromosomal disorder caused by the presence of an extra copy of chromosome number $21$ (trisomy of $21$).In a normal human cell,there are $46$ chromosomes ($23$ pairs).Due to the presence of an additional chromosome $21$,the total number of chromosomes in an individual with Down's syndrome becomes $46 + 1 = 47$.Therefore,the correct option is $47$.

In Down's syndrome $(Mongolism)$,each cell has how many chromosomes?

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