About the gene
- The gene ,discovered in 1993, was located on the 4th chromosome.

- The gene that is mutated is the gene that codes for Huntingtin, a protein in the brain that helps in transerring messages between brain cells

- The protein regularly sends the message. When, mutated, it doesn't do anything, and causes protein aggregation.

- The type of mutation is duplication

- The gene coding in a regular gene has a specific number of the codon, CAG.

- The number of repeats in a regular person is 35, and a person with 40 repeats of the codon has Huntington's disease
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