Is Down Syndrome Inherited/Hereditary?

The best person to answer a question about Down syndrome is a person with Down syndrome. Leah answers this one.


Down syndrome is not gereditary, it i a randomly occuring condition which affects on in seven hundred and eighty one.

There are three types of Down syndrome Trisomy 21, Translocation and Mosaicism. Of the three, translocation can be inherited. However, Translocation Down syndrome appears in just 2-3% of people who have Down syndrome, and just one third of those people inherit it.

In Canada, approximately 1 in every 781 live births results in a Down syndrome determination.

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