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BIO 110, Life Science Summer 2012
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Readings Wikipedia – http://en.wikipedia.org/wiki/Dinosaur http://en.wikipedia.org/wiki/Dinosaur – http://en.wikipedia.org/wiki/Parasaurolophus http://en.wikipedia.org/wiki/Parasaurolophus – http://en.wikipedia.org/wiki/Dinosaur_renaissance http://en.wikipedia.org/wiki/Dinosaur_renaissance Other – Alligator sounds: http://www.soundboard.com/sb/Alligator_sounds_audio.aspx http://www.soundboard.com/sb/Alligator_sounds_audio.aspx – An alternate view of independent origin: http://blogs.smithsonianmag.com/dinosaur/2009/07/did-dinosaurs-roar/ http://blogs.smithsonianmag.com/dinosaur/2009/07/did-dinosaurs-roar/ – Parasaurolophus research: http://www.sandia.gov/media/dinosaur.htmhttp://www.sandia.gov/media/dinosaur.htm – Live-bearing: http://blogs.smithsonianmag.com/dinosaur/2011/05/two-views-on-how-to-make- a-baby-sauropod/ http://blogs.smithsonianmag.com/dinosaur/2011/05/two-views-on-how-to-make- a-baby-sauropod/
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Easily-recognized clades Flowering plants: flowers and fruits Animals: blastula Vertebrates: backbone Insects: three pairs of walking legs
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“Controversial” claims about dinosaurs Dinosaurs are “warm-blooded” – Endothermic vs. ectothermic – Homoeothermic vs. poikilothermic Dinosaur mothers cared for their young Dinosaurs may have vocalized to defend territories or attract mates Dinosaurs may have borne “live young” (no eggs)
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Crocodilians and birds Homoeothermy Parental care Vocalization – Roles of the larynx and syrinx Egg-laying
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Zebra stripes Cryptic coloration? Insect repellent? Missing the big picture
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Life Single or multiple origins? The genetic code: possible homology for all organisms today
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