We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Sounds like what we called mutation when I was a research microbiologist 60 years ago. (I got bored with it 50 years ago and became a professional pilot.) Perhaps mutation is too short and too informative for today's crop.
The difference between epigentics and mutation is that mutation refers to changes in the DNA sequence. Epigentics refers to how genes are expressed. The former is known to be heritable. Whether the latter is heritable is the question.
Thanks. I can't get my arms around ...how genes are expressed.... I can see genes manifesting something, e.g. traits, or qualities, or characteristics, or what have you. I can't see genes expressing anything. Expression implies deliberate action in my lexicon, and I question whether genes can do anything deliberately. Perhaps I'm just old fashioned, or perhaps nuance-disadvantated.
Epigenetics is fascinating. Think about it as herbs and spices marinating in a soup that then infiltrate the meat and vegetables to change their flavor. The topic addresses so many questions. Fortunately, documents exist that can start our understanding of stress, starvation, lack of certain nutrients, daylight, etc. on generation-skipping disfunction's (no apostrophe -- what is this spell check Stalinism?).
Not everything is inherited through the genes. The machinery, mitochondria and such, comes along with the ovum. The development environment in the uterus could also have an influence on gene expression. I'd be interested if the sex of the animal exposed to the stimulus matters. Without knowing much about the subject, I'd expect the mother to matter more than the father.