Biology A-Level
DNA methylation
What DNA methylation means in Biology A-Level, as defined for AQA.
Definition of DNA methylation
Check what you remember
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Reference: AQA
Increased methylation of cytosine bases in the promoter inhibits transcription by preventing protein binding and condensing chromatin.
Topics that use DNA methylation
Related terms
- complementary base pairing
- correlation not causation
- decreased histone acetylation
- environment and gene expression
- genotype versus environment
- histone acetylation
- hypermethylation of tumour suppressor genes
- increased DNA methylation
Using DNA methylation in the exam
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