How does epigenetics influence evolution?

Hi everyone, I have some question regarding epigenetics and evolution. I would greatly appreciate it if this was in the biological evolution forum, as I think it would fit.First, how can epigenetic traits be passed on to subsequent offspring, as seen with changes in mouse hair color, when epigenetic changes don't effect the DNA sequence of the organism? Does it have to do with some retaining trait of the chromosomes during meiosis?I also heard that most of the epigenetic information in sexual species is contained in the mother's DNA (so in the egg gamete?), is that why changes in diet while pregnant can change the offspring physically?Next, why is it thought that epigenetic changes have a more profound impact on micro-organisms, particularly single celled organisms, than multi-cellular life?Which brings me to the chief question, how big of a factor is epigenetics in regards to the evolution of life? If it is a big factor, would it contribute to punk eek in that populations would be able to physically change rapidly in response to environmental pressure without the need of a DNA mutation?Thanks in advanced to all responses.

Thanks for the replies so far. I'm short on time (studying for a big test I have to take later today), so I can't reply to anything specifically now. But I'll definitely read and respond either tonight or tomorrow.