A) 43
B) 46
C) 47
D) 45
Correct Answer: C
Solution :
[c] Karyotype of people suffering from Down's syndrome have 47 chromosomes ( 45 + XY in males, 45 + XX in females) instead of 46. It is caused due to the presence of an extra chromosome, i.e. chromosome number 21. Thus, it is also known as 21 trisomy.You need to login to perform this action.
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