Ancient Animals Found In...Humans!

2010-03-11 13:06:00, Science

Evolution leftovers!

Wings on a flightless bird, eyes on a blind fish, and sexual organs on a flower that reproduces asexually—the casual observer might ask, what’s the point? But these vestigial organs and structures, once useful in an ancestor and now diminished in size, complexity, and/or utility, carry important information and give us clues to our evolutionary past.

Though humans often think of vestigial organs as useless little fixtures that sometimes, as in the case of the appendix, cause us extreme anguish, we wouldn’t know nearly as much about macroevolution as we do now without their presence. In On the Origin of Species , Charles Darwin used vestigial organs as evidence for evolution, and their presence has helped define and shape our phylogenetic trees.


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