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What is A neonate, on examination shows features of hypotonia and the following feature was observed. Probable chromosomal anomoly and explain in detail?
Features of Down's syndrome:-

Flat face
Hypotonia at birth
Increased Intercanthal distance
Epicanthal folds
Low set ears
protruding spots
Iris - Brushfield spots
Blue dot Cataract
Simian crease (Single palmar crease)
Sandal gap.