Biologist Richard Sternberg explains how the whale-evolution sequence is more “artistic license” than demonstrable fact.
Whales are held up as a model of what unguided evolution can do in a short time: in this case, just 8 million years, or perhaps even half that.
Critics laughed, and he removed it from later editions of his book, but Charles Darwin privately continued to believe that whales evolved from a “race of bears.”
“Male mice grow ovaries instead of testes if they are missing a small region of DNA that doesn’t contain any genes,” reports the Francis Crick Institute.
The changes involved in adapting a generic mammalian template into a whale are certainly not all simple, independent, single-letter changes.