I am going to be around sparingly for the next week or so. As of last Thursday, I have out of town guests at my house and they'll be here for a bit longer.
Also, this article is completely fascinating --
Epigenetic Marks on Your GenesThe nutshell is that there's a component called methyl groups that select what genes in your DNA are going to pan out and what a cell is going to be. This article discusses a theory about how methyl groups, which can be added and subtracted, might also be the activating factor that inclines a person toward things like depression and alcoholism as well as good, healthy inclinations as it was collected in the lifetime of your ancestors, primarily parents and grandparents.
Anyway, read it. It's awesome. Here's an excerpt:
According to the new insights of behavioral epigenetics, traumatic experiences in our past, or in our recent ancestors’ past, leave molecular scars adhering to our DNA. Jews whose great-grandparents were chased from their Russian shtetls; Chinese whose grandparents lived through the ravages of the Cultural Revolution; young immigrants from Africa whose parents survived massacres; adults of every ethnicity who grew up with alcoholic or abusive parents — all carry with them more than just memories.
Like silt deposited on the cogs of a finely tuned machine after the seawater of a tsunami recedes, our experiences, and those of our forebears, are never gone, even if they have been forgotten. They become a part of us, a molecular residue holding fast to our genetic scaffolding. The DNA remains the same, but psychological and behavioral tendencies are inherited. You might have inherited not just your grandmother’s knobby knees, but also her predisposition toward depression caused by the neglect she suffered as a newborn.
Or not. If your grandmother was adopted by nurturing parents, you might be enjoying the boost she received thanks to their love and support. The mechanisms of behavioral epigenetics underlie not only deficits and weaknesses but strengths and resiliencies, too. And for those unlucky enough to descend from miserable or withholding grandparents, emerging drug treatments could reset not just mood, but the epigenetic changes themselves. Like grandmother’s vintage dress, you could wear it or have it altered. The genome has long been known as the blueprint of life, but the epigenome is life’s Etch A Sketch: Shake it hard enough, and you can wipe clean the family curse.