Carl Jung, and most Psychologist have theorized that we are born with the memories and experiences of our ancestors imprinted on our DNA, as he mentioned that we are not necessarily unlocking them, but it's possible that our most basic survival instincts might stem from some long ago trauma experienced by a dead relative actually it is theory. In some sense, instinct could be considered a form of memory from our ancestors, instinct is carried on in the genes -- so in that sense it's genetic and it shapes your brain in a certain way. When people talk about genetic memory, they are interested in something more especial or superficial Nature Neuroscience, shows that mice trained to avoid a smell passed their aversion on to their "Grandchildren". They also found changes in our brain structure. The experiences of a parent, even before conceiving, markedly influence both structure and function in the nervous system of subsequent generations, the report conclud