Epigenetics is a recent idea in biology dealing with gene expression.
Unfortunately, it attracts a lot of woo from people like Bruce Lipton.
It has become a buzzword for pseudoscientific claims similar to quantum woo. Commonly, it is misinterpreted as allowing to pass on acquired traits to offspring. There may be a political motivation for this, since some folks find genetic inheritance socially undesirable.
 New Yorker story
In 2016, The New Yorker published a story on epigenitics blurring the line between genetic and environmental explanations for behaviour.
It was widely criticised by scientists.
 See also