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biological

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trinucleotide repeat

trinucleotide repeat A trinucleotide repeat is a stretch of DNA in which a sequence of three nucleotides is repeated multiple times, such as CAG repeats.

A trinucleotide repeat is a stretch of DNA in which a sequence of three nucleotides is repeated multiple times, such as CAG repeats. Changes in the stability of these repeat tracts are linked in the source to human neurodegenerative diseases and cancer.