These Chemical modifications could cause extensive-lasting modifications in gene expression. Epigenetic mechanisms involved in learning include the methylation and demethylation of neuronal DNA and also methylation, acetylation and deacetylation of neuronal histone proteins. IMO, for the reason that: it’s all by design. Which was me leading with the ending. An http://ote.unmsm.edu.pe/?option=com_k2&view=itemlist&task=user&id=42864