That regularly produces offspring of which1/2 are infertile.
It's part of the reason some of the Sa'ami tribes have such low populations. Even Charles Darwin (and his first cousin bride) suffered from the condition with 1/2 their numerous children infertile.
There may be other groups with the problem so we should be able to find the genes. Using a virus to transport them to everyone on Earth, within a generation population growth would stop dead in its tracks!
That’s a terrible idea
better: Kill liberals and end forign aid
That’s not kooky.