Question

list four symptoms of down's syndrome. what is the basis of this disorder???​

Answer 1

Though not all people with Down syndrome have the same features, some of the more common features include:

Flattened face.

Small head.

Short neck.

Protruding tongue.

Upward slanting eye lids (palpebral fissures)

Unusually shaped or small ears.

Poor muscle tone.

Broad, short hands with a single crease in the palm.

Answer 2

Answer:

disorders- *heart defect

*vision problem

* hear loss

* infectoin, hypothyroidism and hypotonia and problem in upper part of spine.

Explanation:

Basis- instead of the collection of 23pairs of chromosomes from both parents, 3 copies of 21 chromosomes results leading to this disease. It is a genetic disorder.