NEET 2000 Biology question

Mongolian idiots are due to trisomy in 21st chromosome is called :

(1)Down's syndromeCorrect
(2)Turner's syndrome
(3)Klinefelter's syndrome
(4)Triplex syndrome

Answer: (1)

Solution

Trisomy of chromosome 21 (47 chromosomes; 2n+1) causes Down's syndrome (mongolism): short stature, a flat face with slanting eyes, a furrowed tongue, a palm crease and mental

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Question ID VK-088713