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What is the cause of the Down syndrome disorder?

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Answer:

There are many causes for Down Syndrome. One of the cause is:

Nondisjunction : The body's cells contains nucleus which has 23 pairs of chromosomes; the nucleus is storage for genetic material (genes). The occurence of Nondisjunction is mainly caused by an error in cell division and an embryo ends up with three copies of chromosome 21 instead of two. In conception the 21st chromosome in a sperm or egg can have an abnormal cell division and as the embryo grows the additional chromosome maybe copied to the rest of the body's cells. Nondisjunction mainly causes Down syndrome type called Trisomy 21. The risk of nondisjunction in women increases as age passes.

First answer by Arianblom. Last edit by Arianblom. Contributor trust: 24 [recommend contributor ]. Question popularity: 2 [recommend question].

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Relevant answers:

Can Down syndrome disorder be managed?
With proper education, training, encouragement and assistance; down Syndrome people are capable of many things. Most can have a job and earn their own income. Some are capable of living...
What is the cause of Down syndrome?
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.
Is Down syndrome a mental disorder?
No, they have part or all of an extra 21st chromosome
What causes the effect of down syndrome?
down syndrome is caused by an extra chrosome 21. it is very common, and issometimes even genetic. their may even be a chrosome error, too.allison386
Is Down syndrome a genetic disorder?
Yes. It is caused by an individual having an extra part or whole 21st chromosome.