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Which chromosome causes down syndrome?

Asked by M. Parker, Last updated: Jul 16, 2020

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K. Myers

K. Myers, Blogger, Chicago

Answered Aug 24, 2018

The chromosome that causes down syndrome is also known as chromosome 21. It is very likely for 1 out of 700 pregnancies for this extra chromosome to take place. The risk is always higher when the mother becomes pregnant and gives birth after the age of 35. When the mother becomes 40 years of age, the possibility that she will give birth to a child with Down Syndrome becomes 12 in 1000 births.

The chromosome that causes down syndrome is also known as chromosome 21. It is very likely for 1

The extra chromosome can affect the person’s overall appearance and overall development. For example, those with down syndrome may become more likely to have some health issues. There was a time when people with Down Syndrome are not expected to live for a long time but some are able to reach up to 70 years of age now.

 

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