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Here's why you aren't built like a lobster.
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Our bodies are mirror images of lobsters and other arthropods from back to belly. We've know since the early 19th century that our guts and nervous systems are inverted from theirs, but only recently has molecular biology shown us why. Here's the evolutionary tale about a worm doing the backstroke and why your guts are on your front
This is part 2 of 3 in my series about how our bodies evolved to look like they do. Check out the others:
Part 1 - https://www.youtube.com/watch?v=qdNE4...
Part 3 - Coming Friday!
More info:
Dorsoventral inversion: http://en.wikipedia.org/wiki/Inversio...)
Geoffrey Saint-Hilaire: http://en.wikipedia.org/wiki/%C3%89ti...
Common animal body plan between protostomes and deuterostomes: http://www.hhmi.ucla.edu/derobertis/E...
How we know that our body plan came later: http://scienceblogs.com/pharyngula/20...
Step by step along the evolutionary tree:
http://tolweb.org/Bilateria/2459
http://en.wikipedia.org/wiki/Bilateria
http://en.wikipedia.org/wiki/Deuteros...
http://en.wikipedia.org/wiki/Protostome
http://en.wikipedia.org/wiki/Urochordata
http://en.wikipedia.org/wiki/Chordate
http://en.wikipedia.org/wiki/Cephaloc...
http://en.wikipedia.org/wiki/Craniate
http://en.wikipedia.org/wiki/Gnathost...
Evolutionary timeline of vertebrates: http://www.utexas.edu/news/2008/03/03...
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Last week's video: Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9m...
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The Science of BBQ https://www.youtube.com/watch?v=ccqOV...
The Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-L...
The Far Future of the Universe - https://www.youtube.com/watch?v=Jl9Dw...
There Was No First Human - https://www.youtube.com/watch?v=xdWLh...
How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p...
You Are An Upside-Down Lobster major field of study medicine | |
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