General Knowledge - Biology - Discussion

Discussion :: Biology - Section 1 (Q.No.65)


Number of chromosomes in Down's syndrome is

[A]. 46
[B]. 47
[C]. 48
[D]. 49

Answer: Option B


No answer description available for this question.

Aadi said: (Nov 30, 2010)  
what is dows syndrom

Simran said: (Sep 13, 2011)  
In case of Down's syndrome, a child gets an extra chromosome 21 - for a total of 47 chromosomes instead of 46. It's this extra genetic material that causes the physical features and developmental delays associated with DS.

.JAWERIA said: (Dec 29, 2011)  
It is also called monogolism. The abnormality of this disease include mental retardation, low iq in 20 to 50 range and many other things. It has extra chromosomes attached to pair 21.

Lesponi said: (Jun 30, 2017)  
Option B is correct answer. I agree.

G K Singha said: (Aug 22, 2018)  
Yes, it is the right answer. I agree.

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