Jerry A. Coyne
Jerry A. Coyne is an American evolutionary biologist and author known for his work on speciation and his advocacy for the theory of evolution.
"Life on earth evolved gradually beginning with one primitive life form – perhaps a self-replicating molecule – that lived more than 3.5 billion years ago; it then branched out over time, throwing off many new and diverse species; and the mechanism for most (but not all) of evolutionary change is natural selection."