![Down’s syndrome is caused by (MHT-CET)](https://www.gkseries.com/blog/wp-content/uploads/2022/04/Downs-syndrome-is-caused-by-MHT-CET.png)
Q. Down’s syndrome is caused by (MHT-CET)
A. Monosomy of 21 chromosome
B. Trisomy of 21st chromosome
C. Deletion in chromosome
D. Duplication of chromosome
Answer: Trisomy of 21st chromosome
A. Monosomy of 21 chromosome
B. Trisomy of 21st chromosome
C. Deletion in chromosome
D. Duplication of chromosome
Answer: Trisomy of 21st chromosome
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