User blog comment:Psypher/Young Justice Issue 19/@comment-432124-20120916015850/@comment-5188108-20120917210019

It's specifically referred to as "enhancement surgery". So it's not just that they've been given some drug, there's been some sort of physical change performed, which wouldn't be passed on. Even if we expand the definition of surgery to include genetic manipulation, that would only be passed on to a gorilla's children if the cells of their reproductive tissue was altered, as well as their brain. Which is what I meant by the Brain going out of his way to have it passed on. Of course it's a common sci-fi trope for any form of genetic modification to immediately and fully affect every cell of the recipient's body, so it's all moot really.