Question

Down’s syndrome is also known as ______.

Answer 1

Down’s syndrome is also known as mongolian idiocy.

Explanation:

Down’s syndrome is a genetic disorder caused by the presence of an extra copy (trisomy) of chromosome 21, resulting in 47 chromosomes instead of the normal 46. It is characterized by mental retardation, heart defects, a short and stocky body, characteristic eye folds, and lack of muscle tone. Affected children have distinct physical features, such as a flattened nasal bridge, prominent forehead, a large protruding tongue, and a characteristic skin fold at the corner of the eyes. This condition was first described by langdon down in 1866 and occurs due to non-disjunction of autosomes during gamete formation.