If that's not what you want, you'd need something like a virus to spread it. But then you have to ask yourself: what if that virus mutates? The specialization to certain gene markers is an evolutionary disadvantage, so evolution will tend to make it lose that restriction. Ooops.
Like many things of this nature, people keep bringing it up because it sounds Very Scary and Very Dystopian - not because it's worth giving an actual fuck about.