A chromosomal abnormality that is characterized by an extra copy of chromosome 21.A person with this disorder typically has a round face,a flattened skull,an extra fold of skin over the eyelids,a protruding tongue,short limbs,and retardation of motor and mental abilities.

Question

Quizplus · Accepted Answer

The Answer of A chromosomal abnormality that is characterized by an extra copy of chromosome 21.A person with this disorder typically has a round face,a flattened skull,an extra fold of skin over the eyelids,a protruding tongue,short limbs,and retardation of motor and mental abilities.

A Chromosomal Abnormality That Is Characterized by an Extra Copy