Evolution of Populations

This clip describes the population evolution that we discussed in class and reviews Darwins travels and some evidence for evolution. It also includes the Hardy-Weinberg equation, but while this is good to know it is not something you will be tested on:

http://www.youtube.com/watch?v=MzKQfrb8Dh4

The background music is a little distracting, but the information is good.

Natural Selection

The following video is taken from Cosmos and explores the theory of natural selection.

The following video takes another look at natural selection’s mechanism. Now it is not always perfectly accurate, but it does a pretty good job of outlining the steps of how a trait can be “selected” by nature for passing on.

One more video going over the basics of evolution and natural selection:

One of the key things to keep in mind is our idea of fitness.

Fitness: the ability of an individual to survive and reproduce in its specific environment

Try to relate what is in the videos to the three tenants of evolution by natural selection:

  1. The Struggle for Existence
  2. Survival of the Fittest
  3. Descent With Modification

History of Evolutionary Thought

The following video shows the major steps in evolutionary thought. It goes beyond what we covered in class to give a more complete picture, but to my estimation it has one flaw… it is missing Malthus.

The following is a clip on the work of Thomas Malthus.

The following clip is on The Impact of Evolutionary Thought on the Social Sciences. It is about 48 minutes, but interesting to think about and how this relates to what we had discussed in bioethics: