Exogenetic heredity is the form of heredity that is mediated not through the chromosomes but through other - generally speaking, "cultural" - means of information transfer. That which is propagated is knowledge, know-how, and various products of mind such as books, laws, rules of behaviour, and mechanical and other inventions.
From Aristotle to Zoos: A Philosophical Dictionary of Biology by P.B. Medawar & J. S. Medawar.