2. BIO 110, Life Science Summer 2012

3. 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/

4. Easily-recognized clades Flowering plants: flowers and fruits Animals: blastula Vertebrates: backbone Insects: three pairs of walking legs

5. “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)

6. Crocodilians and birds Homoeothermy Parental care Vocalization – Roles of the larynx and syrinx Egg-laying

7. Zebra stripes Cryptic coloration? Insect repellent? Missing the big picture

8. Life Single or multiple origins? The genetic code: possible homology for all organisms today