Biology A-Level
histone acetylation
What histone acetylation means in Biology A-Level, as defined for AQA.
Definition of histone acetylation
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Reference: AQA
Adding acetyl groups to histones reduces their positive charge, weakening their attraction to DNA's phosphate groups and loosening chromatin to stimulate transcription.
Topics that use histone acetylation
Related terms
- complementary base pairing
- correlation not causation
- decreased histone acetylation
- DNA methylation
- environment and gene expression
- genotype versus environment
- hypermethylation of tumour suppressor genes
- increased DNA methylation
Using histone acetylation in the exam
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