Although most edible plants grow in the tropics, the main efforts to increase harvests have been based on a small selection of species from industrialised countries.
Darwin, who published On the Origin of Species by Means of Natural Selection in 1859, came fourth in a poll run by the BBC in 2002 to find the public's greatest Briton of all time.
Natural selection kept those survivor species viable in the soil as a plan for the future.
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In summary, Dr Saetre and his colleagues have vindicated Dobzhansky and thus confirmed a mechanism for the origin of species that is directly caused by natural selection, rather than being an accidental by-product of it.
Darwin's observation that species evolve over the course of generations through the natural selection of favourable traits has become a central pillar of biological thinking and has influenced many other fields of scientific endeavour.
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And traditionally bred varieties have undergone a process more akin to natural selection than those which have merely had genes from other species inserted into them.
The short answer is: calling into question whether the processes of random variation and natural selection are all we really need in order to understand the origin of species.
No creationist in academia has a belief in fixity of species, indeed no serious minded scientist who believes in Creation has ever denied natural selection and change within kinds.
Millions of years of natural selection and specialization have led to the instinctual formation of herds by thousands of species over unfathomable stretches of time and on every single continent on earth.
"Natural selection doesn't care one iota about the performance of the elite members of the species at distance running, " he said.
Darwin showed in detail how life changes over the course of time by the process of natural selection, but failed to explain how those changes can take different courses, dividing a species in two and thus multiplying the number of species.
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