BIOLOGICAL MYTHS. “A compound hypothesis positing that self-fertilization is an evolutionary dead end conflates two distinct claims: the transition from outcrossing to selfing is unidirectional; and the diversification rate, or the balance of the speciation and extinction rate, is negative for selfing species. Both claims have enjoyed widespread informal support for decades, but have recently come under suspicion.”
http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full
