This was a tv series that was canceled almost immediately. I think there was only one episode as a matter of fact. Here’s what I remember.
A doctor makes a formula that makes you stop aging. After everyone in the world has taken it, about half of the people who have taken it turn into mutant cave people. The remaining civilized population all have crystals in their chests. The color of the crystal determines who you’re allowed to make babies with. If you breed with someone of the wrong crystal color, you risk giving birth to a mutant cave person.
I know exactly the one you mean, but damned if I can remember the name; I think it was a pilot, not a short-lived show, and there were so many apocalyptic-future pilots in the 70s. I remember the guy who was half-mutant (mother had survived being raped), was the team muscle and had the only Black gene rating. Also, the teenage boy who was freaked because his mother looked like a hot 20, despite being at least 25 years older than him.