Dare to be boring

[nancylebov]

There's been recent news that a species of mustard can have paired mutant genes but still produce normal offspring. The current tentative explanation is that the plant (and perhaps many other species) maintains a copy of the good genes--perhaps its entire genome--which can sometimes override mutations.

While I generally prefer that the world be weirder than it looks, I'm betting that the particular mutation is unstable and has a small chance of reverting to the normal form on its own.