Biology 101


	Mutation is random; natural selection is the very opposite of random. Richard Dawkins Lecture Downloads

	Lecture 19: Moving to Land The four-legged body plan first evolves in fish; the rise of modern amphibians.		Lecture 23: Avian Ancestors While crocodiles still roam the earth, the dinosaurs came and went, or did they?
	Lecture 20: Modern Amphibians Frogs and salamanders can live on land, but are still tied to water.		Lecture 24: Birds Taking flight in an amazing adaptative radiation.
	Lecture 21: Making An Egg Amniote characteristics and the radiation of turtles.		Lecture 25: Mammals Egg-laying monotremes and pouched marsupials.
	Lecture 22: Squamates Reptile characteristics and the diversity of lizards and snakes.		Lectures 26 & 27: Placental Mammals The most successful radiation of mammals is tied to the umbilical cord.
			Lecture 28: Video on Evolution Why do we need to have sex? What is the usefulness of the male in natural populations?


	Outline Downloads April 8 Lecture 19 April 10 Lecture 20 April 15 Lecture 21 April 17 Lecture 22 April 22 Lecture 23 April 24 Lecture 24 April 29 Lecture 25 May 1 Lecture 26 May 6 Lecture 27 May 8 Lecture 28 May 13 Final Exam Download Lecture Schedule Download Boulder Creek Download Living With Snakes Download Nests Archived Lectures Midterm 1 Lectures Midterm 2 Lectures

Email Dr. Hollingsworth
hollings@sciences.sdsu.edu