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The name "trisomy" originates from the Greek prefix "tri-" meaning "three," and "soma," meaning "body" or "body part." It refers to the presence of an extra chromosome in an individual’s genetic makeup, resulting in three copies of a particular chromosome instead of the usual two. The term reflects the condition's nature, where the typical diploid set of chromosomes is altered by the addition of an extra chromosome. Trisomy is commonly associated with various genetic disorders, such as Down syndrome, which is caused by an extra copy of chromosome 21.

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1w ago

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