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Down Syndrome Learning Center
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Down syndrome is a genetic condition in which a person has 47 chromosomes instead of the usual 46.
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Down syndrome is the most common cause of mental retardation and malformation in a newborn. A genetic disorder, it occurs because of the presence of an extra chromosome.
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Down syndrome is the most common chromosome disorder and genetic cause of mental retardation. It occurs because of the presence of an extra copy of chromosome 21. For this reason, it is also called trisomy 21.
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Down syndrome is the most common chromosome disorder and genetic cause of mental retardation. It occurs because of the presence of an extra copy of chromosome 21. For this reason, it is also called trisomy 21.
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Down syndrome is the most common chromosome disorder and genetic cause of mental retardation. It occurs because of the presence of an extra copy of chromosome 21. For this reason, it is also called trisomy 21.
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Down syndrome is the most common cause of mental retardation and malformation in a newborn. It occurs because of the presence of an extra chromosome.
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Also referred to as Down's syndrome or Down's, a genetic disorder present at birth that is caused by an abnormality in the number of chromosomes. Down syndrome occurs with equal frequency in people of different nationalities, social backgrounds, a...
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