Which human chromosomes are involved in Down‚Äö√Ñ√∂‚àö� – McqOptions

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1.	Which human chromosomes are involved in Down‚Äö√Ñ√∂‚àö√ë‚àö¬•s syndrome?$
A.	6
B.	14 and 21
C.	8 and 12
D.	X and Y
Answer» C. 8 and 12

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