Epigenetics, buzzword? Or reality that we can use to our advantage?

Surely you have heard this word and how what happened to our parents or grandparents has an impact on our lives and behavior.

It turns out that it has to do and that the memory of events or the environment is in each of our cells.

So how is it that in the Adapted Genetics course and selection guidelines, we are able to obtain very superior animals for a given environment?