A blogger named Bitbutter asked Cornelius Hunter if there were examples of ERVs that did not fit the evolutionary pattern. Dr. Hunter wrote, through Casey Luskin, that there were and that he has written about them in his book Science's Blind Spot. Here is Bitbutter's response:
It is easy to see where Dr. Hunter got off track. The key is not to look for whether all of a species' descendant species have the ERV, but whether or not that ERV can be found in a common ancestor to the descendant species. Then you have to explain the sheer number of them.
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