Critical Wit #43 – Molecular Biological Evidence For Evolution

Zachary Moore is a molecular biologist and host of the Evolution 101 podcast.  The 38-episode podcast consists of short episodes that are designed to provide a simple explanation of the independent lines of evidence that support the theory of evolution.  In this episode, we talk about some of the molecular evidence that supports the conclusion that species evolved from common ancestors.  You can find the podcast in various podcast directories, as well as transcripts at  And you can follow Zachary Moore on Twitter @drzach.


  1. James says:

    Can’t the relationships be the same based on a common designer?

    • CW says:

      I’m not sure I understand your question, but let me try to answer it this way…

      What we know from a genetic standpoint is that similarities amongst species are consistent with each other, as well as consistent with the fossil record and radiation. They all point to common ancestry at various intervals going back in time.

      If animals didn’t evolve from common ancestry, then you would think to find humans having some similar genetic characteristics to chimpanzees, some similar genetic characteristics to that of squirrels, etc. Eventually, you get to the point where we’re not as similar to something like yeast, but still similar enough to where we can swap out a large portion of our genes with yeast, and suffer no adverse effect.

      No, I think it’s pretty conclusive that all of life as we’ve discovered thus far, shares common ancestors.

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