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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
The proportion of men to women with Down syndrome is about equal.
#21
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.
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
It's when a child is neglected as a child