The Case for Inheritance of Epigenetic Changes in Chromosomes
Harmful chemicals, stress and other influences can permanently alter which genes are turned on without changing any of the genes' code. Now, it appears, some of these “epigenetic” changes are passed down to—and may cause disease in— future generations
When my kids were born, about 30 years ago, i knew they had inherited about half their DNA from me. At the time, the transfer of DNA from sperm or egg to an embryo was thought to be the only way that heritable information could flow from parents to children, at least in humans and other mammals.