I have an issue on Natural Selection:
http://www.pnas.org/cgi/reprint/0508653103v1
The new study – published online in the Proceedings of the National Academy of Sciences – provides empirical support for the proposition that natural selection is a general force behind the formation of new species by analyzing the relationship between natural selection and the ability to interbreed in hundreds of different organisms – ranging from plants through insects, fish, frogs and birds – and finding that the overall link between them is positive.
The question is this (bolded in red). Comments much appreciated.
It's a forum debate, and I am simply asking what he suggested the answer will be if I ask any biologist, how accurate is this that is quoted above.
Many thanks