hops is close enough in relation to cannabis to be nutritionally compatible.
not to say you can cross breed them becuase you cant.
but you can graft them together and grow pot branches on a hops vine, and nobody is ever gonna get on a ladder to make sure they are all hops branches.
and just to save time. NO. you cant graft hops on a pot root and get stoney hops.
and in that simpsons ep[isode they got they science way off.
seeds cannot cross, they can mutate internaly but not combine with other seed stock, and if the root systems somehow merged as a result of mutation results over a field would be sporadic at best.
many plants can be easily cross polinated to form hybrids, cucumber and squash for example, almost anything in the melon family will cross polinate with success.