There are all sorts of movies and narratives to reassure people that DNA-based social or hiring selection is unlikely to happen anytime soon, because supposedly

There are all sorts of movies and narratives to reassure people that DNA-based social or hiring selection is unlikely to happen anytime soon, because supposedly there are few biological factors that allow you to easily predict life trajectory or productivity. But I'm afraid the slightest boost in predictive power will matter to an organization of scale. And while it might be hard to tell if you should be a mathematician based on your DNA, it might be easier to tell risk factors about you or your relatives, which could cause an employer to see you as too expensive. It's illegal to discriminate on disability, but if I know you're predisposed to heart disease and discriminate on similar basis, is that discrimination on disability if society doesn't classify it that way? Also eventually judgments may be made on people which involve weights from thousands of data sources, only one of which will be DNA. It will be difficult to explain why any decision was made.