Question

A Down’s syndrome will be
(a) 45 + XX
(b) 44 + XY
(c) 44 + XXY
(d) 22 +XY

Answer 1

option ➡️(d) 22 +XY

Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is typically associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features.

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