Now at the Molecular Level
One problem with this argument, however, is that many of the similarities between species do not fall into the hypothetical evolutionary pattern. In these cases evolutionists must say that the similarities evolved independently rather than by common descent, via a process they call convergent evolution. But if a tremendous variety of designs is possible, then why would the random, unguided process of evolution just happen to find the same design so often?
Evolutionists explain this by appealing to natural selection, but in doing so they demonstrate that common descent is not necessary to explain these similarities. In other words, they need not be an artefact of common descent.
Years ago this problem was not critical as convergent evolution seemed limited. But since then, in the inexorable march of science, the cases of convergent evolution have skyrocketed. And even evolutionists are now agreeing that it will only become worse.
The latest example is the independent evolution of echolocation in mammals such as bats and whales. Such convergence has been known for some time now, but now it is observed at the molecular level as well. As the paper explains, “convergence is not a rare process restricted to several loci but is instead widespread”.
As one evolutionist admitted, “These results imply that convergent molecular evolution is much more widespread than previously recognized”. And another admitted that the results are astonishing:
We had expected to find identical changes in maybe a dozen or so genes but to see nearly 200 is incredible. We know natural selection is a potent driver of gene sequence evolution, but identifying so many examples where it produces nearly identical results in the genetic sequences of totally unrelated animals is astonishing.
And that’s not all. The evolutionists were also surprised to find similar molecular patterns in many genes linked to vision. Apparently evolution is not so constrained, and not limited to working with whatever designs happen to be available, as evolutionists have so strenuously argued. As the evolutionists were forced to conclude, convergent evolution is probably “much more pervasive than previously recognized.” In fact, even the venerable pentadactyl pattern has fallen prey to convergent evolution. As one study concluded:
Even more striking, we find strong statistical support for the re-acquisition of a pentadactyl body form from a digit-reduced ancestor. … The results of our study join a nascent body of literature showing strong statistical support for character loss, followed by evolutionary re-acquisition of complex structures associated with a generalized pentadactyl body form.
Or as one evolutionist simply put it, “The conclusion seems inescapable, and an old ‘certainty’ must be starkly reversed.”