Epigenetics
Changes in gene expression without a change in sequence, and the disorders they cause.
6 pages
Topics
- Epigenetics: DNA and histone methylationEpigenetics means chemical marks on DNA and histones that switch genes on or off without…
- 5-Methylcytosine5-Methylcytosine is cytosine with an extra methyl group; it is the main epigenetic mark on DNA…
- Epigenetic disorders, environment and methylation testingDiseases can come from faulty epigenetic marks or from genes that write and read them…
Conditions and syndromes
- Prader–Willi and Angelman syndromes (imprinting)Prader–Willi and Angelman syndromes come from the same chromosome 15 region: Prader–Willi when…
- Beckwith–Wiedemann syndromeAn overgrowth syndrome with a large tongue, abdominal wall defect, low blood sugar at birth and…
- Rett syndromeA genetic brain disorder, mostly in girls, where skills are lost after 6–18 months of normal…
This section is an index: it gathers pages from Biochemistry, Pathology, Embryology and other sections without repeating them. Educational content; it does not replace a geneticist's assessment or genetic counselling.
Representative model, for educational purposes only.