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One of the best arguments Darwin used for his theory was that of homology: the odd similarities between very different animals. Why would they be so similar unless they were related? He thought. And this does make sense, after all take siblings, they look pretty similar - they’re closely related. Then take cousins, or 3rd uncles, or former roommates. Less similar looking, less related. More similar looking = more related. Makes sense!
Darwin wasn’t the first to notice this, but he did harness it as a central proof in The Origin of Species. It’s to this day used a great evidence for evolution...but is really? Here’s the story.
More Reading:
iconsofevolution.com/survival...
Do All Life Forms Fall into a Nested Hierarchy? evolutionnews.org/2015/06/do_...
Responding to the NCSE: exploreevolution.com/2009/02/...
A Primer on the Tree of Life: www.discovery.org/a/10651/
Questions? theshortstoryvideos@gmail.com