how is Klinefelter syndrome diff from Down syndrome?

[joonkimdds]

aren't both of them caused by nondisjunction and trisomy?

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[IdahoDoc]

Both are caused from non-disjunction but downs is trisomny 21 or 3 of the 21 chromosome and kilinefeleters is XXY or XXXY and give a very feminine male.

 

[joonkimdds]

so down syndrome is for autosome and klinefelder is for sex chromosome?

 

[IdahoDoc]

Yes