Exaptation

This was an interesting word to learn for me because I had never heard of it before. When I looked up the definition it was defined as "a term used in evolutionary biology to describe a trait that has been co-opted for a use other than the one for which natural selection has built it" (Google Dictionary). I was curious to see the evolution of the archaeopteryx that was talked about in the chapter so I also looked up a picture to see how it had changed.

http://10e.devbio.com/article.php?ch=16&id=161

This article gives a good time line on how this creature evolved into what our modern day birds look like.
Exaptation

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