No age group is affected; Down syndrome is a chromosome condition that is with you at birth.
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Chromosome 21 is tripled in Down syndrome.
The lungs.
#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.
It's when a child is neglected as a child
Yes two non-Down syndrome parents can have a Down syndrome child. This is the most common situation, mainly because very few Down syndrome affected people are parents. Few Down Syndrome affected people become parents, partly because of reduced fertility associated with the syndrome, partly because of an increased risk of passing on the syndrome (very roughly from 1 in 800 to 1 in 3), and partly because of societal restrictions. ___________ Also, the parent(s) who has 1 down syndrome gene will be passed onto the child
Like one million and going up everyday