Down Syndrome

What are the possible causes of Down's syndrome?

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2016-07-04 08:58:58

When a baby is conceived, it receives genetic information from

its parents in the form of 46 chromosomes: 23 from the mother and

23 from the father. In most cases with Down syndrome, the child

receives an extra copy of Chromosome 21 - for a total of 47

chromosomes instead of 46.

It's this extra genetic material that causes the physical

features and developmental delays associated with Down Syndrome.

This form of Down syndrome is called Trisomy 21.

Down syndrome is caused by nondisjunction of this chromosome in

a parent who is chromosomally normal.

It is one of the most common chromosomal abnormalities in

live-born children. The extra chromosome causes problems with the

way the body and brain develop.

Down syndrome or trisomy 21 is caused by nondisjunction of

chromosome 21 in a parent who is chromosomally normal and is one of

the most common chromosomal abnormalities in liveborn

children.


Down's syndrome is caused when there is an extra chromatin present

in chromosome 21 when an child is born.


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