This idea has been bouncing around in my head for a while...
Wouldn't it be interesting if species could reproduce in such a way to have three parents?
It'd be a lot easier on the genetics, because the gene that won would be the one that came from 2 or 3 parents, rather than having dominant genes.
For this to work it would probably be easier with a single gender species than a triple gender species, though.
And no, I am not good with biology =p I just thought this was interesting. Any comments?