EEB 122 - Principles of Evolution, Ecology and Behavior
Lecture 14 - Species and Speciation. Speciation is the process through which species diverge from each other and/or from a common ancestor. There are several definitions of species, most of which focus on reproductive isolation and/or phylogenetic similarities. This can cause some controversy. Speciation can result from geographical separation or ecological specialization. There are stages of speciation in which organisms cluster first into distinct populations before finally becoming different species. (from oyc.yale.edu)
| Lecture 14 - Species and Speciation |
| Time | Lecture Chapters |
| [00:00:00] | 1. Introduction |
| [00:03:38] | 2. Diversity and How Speciation Happens |
| [00:17:13] | 3. Concepts and Criteria of Speciation |
| [00:26:04] | 4. The Genetics of Speciation |
| [00:34:41] | 5. Mechanics and Examples of Speciation |
| [00:40:30] | 6. Experiments, Applications, and Cryptic Species |
| [00:48:09] | 7. Summary |
| References |
| Lecture 14 - Species and Speciation Instructor: Stephen C. Stearns. Resources: the Yale Galapagos site. Transcript [html]. Audio [mp3]. Download Video [mov]. |
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