A genetic condition characterized by varying degrees of mental retardation and multiple defects is called

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Down syndrome is a genetic condition caused by the presence of an extra chromosome 21, leading to varying degrees of intellectual disability and physical defects such as heart defects, hearing loss, and characteristic facial features. Erythroblastosis fetalis is a condition caused by Rh incompatibility between the mother and fetus, leading to destruction of fetal red blood cells. Respiratory distress syndrome is a condition primarily affecting premature infants, where the lungs are not fully developed and cannot produce enough surfactant to prevent collapse of the alveoli. Spina bifida is a neural tube defect where the spinal cord does not fully develop, leading to varying degrees of paralysis or other physical impairments. None of these conditions are characterized by both mental retardation and multiple defects as is Down syndrome.

A Genetic Condition Characterized by Varying Degrees of Mental Retardation