… The taboo on the inheritance of acquired characteristics was lifted at the beginning of the twenty-first century, with the recognition of epigenetic inheritance, meaning inheritance over and above the genes. Some kinds of epigenetic inheritance depend on small RNA molecules (sRNA), others on the methylation of DNA, others on modifications to the proteins that bind to DNA. The genes are not changed through mutation, but are switched on or off through the way they are packaged. The discovery that some of these changes are inherited through eggs, sperm and pollen marks a revolutionary change in modern biology.
Tuesday, June 23, 2015
… Darwinian Inheritance and the Evolution of Evolutionary Theory - Campaign for Open Science. (Hat tip, Dave Lull.)