No Answers in Genesis Discussion Board: Darwinism

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Darwinism

Posted by Scientistforlife on June 28, 2009, 9:40 am
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erry A. Coyne is a professor in the Department of Ecology and Evolution at The University of Chicago. In Why Evolution is True, he summarizes Darwinism—the modern theory of evolution—as follows: “Life on earth evolved gradually beginning with one primitive species—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.”

Coyne further explains that evolution “simply means that a species undergoes genetic change over time. That is, over many generations a species can evolve into something quite different, and those differences are based on changes in the DNA, which originate as mutations. The species of animals and plants living today weren’t around in the past, but are descended from those that lived earlier.”

According to Coyne, however, “if evolution meant only gradual genetic change within a species, we’d have only one species today—a single highly evolved descendant of the first species. Yet we have many… How does this diversity arise from one ancestral form?” It arises because of “splitting, or, more accurately, speciation,” which “simply means the evolution of different groups that can’t interbreed.”

If Darwinian theory were true, “we should be able to find some cases of speciation in the fossil record, with one line of descent dividing into two or more. And we should be able to find new species forming in the wild.” Furthermore, “we should be able to find examples of species that link together major groups suspected to have common ancestry, like birds with reptiles and fish with amphibians.” Finally, there are facts that “make sense only in light of the theory of evolution” but do not make sense in the light of creation or design. These include “patterns of species distribution on the earth’s surface, peculiarities of how organisms develop from embryos, and the existence of vestigial features that are of no apparent use.” Coyne concludes his introduction with the bold statement that “all the evidence—both old and new—leads ineluctably to the conclusion that evolution is true.”

Of course, “evolution” is undeniably true if it means simply that existing species can change in minor ways over time, or that many species living today did not exist in the past. But Darwin’s claim that all species are modified descendants of a common ancestor, and Coyne’s claim that DNA mutations and natural selection have produced those modifications, are not so undeniably true.