Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.

Trinucleotide repeat

From Biology-Online Dictionary | Biology-Online Dictionary
Jump to: navigation, search

Definition

noun, plural: trinucleotide repeats

A form of mutation characterized by a stretch of three nucleotides (codon) repeated in multiple times in the DNA sequence.


Supplement

The trinucleotide repeats expand in successive generations and their effect depends on their length in the DNA sequence. When the extent of trinucleotide repeats exceeds the stable threshold, it manifests into a disease. A set of disorders related to trinucleotide repeat expansion is called trinucleotide repeat disorders.


Related term(s):