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No age group is affected; Down syndrome is a chromosome condition that is with you at birth.
Chromosome 21 is tripled in Down syndrome.
The lungs.
whats affected is the right to see
#21
The proportion of men to women with Down syndrome is about equal.
there are approxmately 1/4 million families in the united states affected by down syndrome.
chromosome 21
Forty-seven. In Down syndrome, there is an extra 21st chromosome. It is also known as Trisomy 21.
Moebius syndrome is considered rare, with an estimated prevalence of 1 in 50,000 to 1 in 500,000 live births. This means that only a very small percentage of the general population is affected by this condition.
Marshall syndrome is a rare genetic disorder, with a prevalence that is not well documented in the general population. It is estimated to occur in fewer than 1 in 100,000 individuals. This means that less than 0.001% of the population is affected by Marshall syndrome.
It's when a child is neglected as a child