Epigenetics is the tremendous new science of how genes are expressed the old idea is that genes simply dictated instructions for building and running a body epigenetics says its a two way street the body and the environment can change the way that genes are expressed when and how much as well as potentially how they are passed on. Epigenetics how environment shapes our genes by richard c francis may 29 2012 2295 paperback earn 115 plum r points paperback 2295 hardcover 3000 add to cart wish list buy online ship to an address free shipping on orders over 35 pickup in store to see if pickup is available select a store buy in store to check store inventory select a store prices and offers . Read epigenetics how environment shapes our genes by richard c francis available from rakuten kobo goodbye genetic blueprint the first book for general readers on the game changing field of epigenetics the bur. Under the influence of external factors epigenetic mechanisms regulate which genes are turned on and off this helps our fixed genetic material to be more flexible at the biochemical micro level epigenetic regulators are responsible for how closely packed individual genomic regions are and therefore how accessible or not they are