Epigenetics is the study of these chemical reactions and the factors that influence them. Meet the epigenome and learn how it influences DNA. Change the level of gene expression in a cell with the turn of a dial!
So sure, why not? We have cell memories. Might help us in a fight with a poisonous snake (if we can only remember the name of that shrub - which I can't for the life of me.) And yes, we have spiritual memories that we appear to be able to access on a daily basis - and often on a nightly basis.
and that's my two cents for the day. RM