Epigenetics: Maybe not that big of a deal, after all, says study

A new paper is arguing that epigenetic variation—basically, what happens when an environmental trigger turns genes on and off, or makes them express differently—may not survive over many generations and, thus, would not have much of an impact on evolution in general. Expect a lot of dissent. This will be an interesting debate and I'm looking forward to seeing how the evidence shakes out over a few more papers. Read the rest