Biology, asked by Riya1122333, 1 year ago

explain Down Syndrome?????

Riya1122333: hiii....

ishantgoyal23: hii

Answers

Answered by ishantgoyal23

hii
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see pg no 91 of ncert textbook
down syndrome is the genetic problem after addition of an additional copy of chromosome no. 21
symptoms palm crease,congenital heart disease etc
thanks
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Riya1122333: i dint got it........

ishantgoyal23: in ncert of 12

Riya1122333: kk

Riya1122333: hii

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