Q. The following features belong to which syndrome?
(i) Furrowed tongue
(ii) Palm is broad with characteristic palm crease
(iii) Physical, psychomotor and mental retardation
(iv) Short statured with the small round head

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Solution:

Down's syndrome is a chromosomal disorder. The cause of this genetic disorder is the presence of an additional copy of the chromosome number (trisomy of ). This disorder was first described by Langdon Down.