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Down Syndrome
–
Risk and maternal age
|
The chance of having a
baby with Down’s syndrome |
|
25 years old |
1 in 1,400 |
|
30 years old |
1 in 800 |
|
35 years old |
1 in 380 |
|
38 years old |
1 in 190 |
|
40 years old |
1 in 110 |
|
45 years old |
1 in 30 |
Chart Information
The majority of babies with Down’s syndrome are still born to younger women, on account to the fact that the overall birth rate is higher in younger women. The risk of a couple have a second child with Down’s syndrome can be more than that of the general population. About one in one hundred humans with DS have gotten the disorder from their parents.
Above information was found at: http://www.dsa-uk.com/Literature/Downs_questions.htm
More Common?
This illness is NOT more common in any certain race or
group of people. One with Down’s syndrome (DS) will look different from someone
who doesn’t have DS.
Reasons
The reason why Down’s syndrome occurs: The child was
born with one too many chromosomes 47 instead of 46. (Children are born with 46
chromosomes, 23 from our father and 23 from our mother. But, a child with DS
has an extra chromosome. Thus, the effect is Down’s syndrome. The extra
chromosome can come from either the mom or dad.)
Types
In all there are 3 known types of Down’s
syndrome. 95% (the most common type of Down’s syndrome) of the humans who have
DS have standard trisomy 21, which is always a mistake of the environment. Any
person can have this type of DS and there is no explanation of why it happens.
Main Indicators
There are many features Doctors look for when diagnosing Down’s syndrome.
Click here for
the features the doctors look for.
For more information
on Down’s syndrome click here
