The premise is simple. We have limited farwa, wolpin, and tajaran cubes. The only way to get more is to ask genetics, which is a tedious process.
So, I propose we just put the cubes into the biogen. It allows for a generally limited resource to be made infinite, and since there's no real difference between monkeys and other species cubes, the question is why not?
It COULD be argued that you'd abuse this by using taj cube eyeball darkvision and give that to all species, but that's like saying playing vulp or tajaran is powergaming.