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Most cases of Down syndrome result from trisomy 21, which means each cell in the body has three copies of chromosome 21 instead of the usual two copies. The extra genetic material disrupts the normal course of development, causing the characteristic features of Down syndrome.

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11y ago
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9y ago

When cells receive three copies of chromosome, it results in Down Syndrome.

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11y ago

That is Trisomy 21 also known as Down Syndrome

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down syndrome

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Down syndrom

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Down Syndrom

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Down syndrome x

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Q: What common condition is caused by the presence of three copies of chromosome 21?
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What common condition is caused by presence of three copied of chromosome 21?

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What common condition is caused by the presence of three copies is chromosomes 21?

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