EEB 122 - Principles of Evolution, Ecology and Behavior
Lecture 09 - The Evolution of Sex. There are several explanations for the evolution of sex and its continued prevalence. One is facilitating the spread of helpful mutations while hastening the removal of harmful ones. Another is expediting resistance against pathogens. Sex does have several costs compared to asex, such as only giving half your genome to offspring, having to find mates, and the risk of predation and STDs. Overall, the benefits outweigh the costs and sex has a firm hold on the majority of the recent branches of the tree of life. (from oyc.yale.edu)
| Lecture 09 - The Evolution of Sex |
| Time | Lecture Chapters |
| [00:00:00] | 1. Introduction |
| [00:08:54] | 2. The Traditional View on Sex's Existence |
| [00:13:38] | 3. The Costs of Sex |
| [00:28:02] | 4. Recombination |
| [00:38:25] | 5. Pathogens and Parasites |
| [00:44:54] | 6. Modern Asexuality and Conclusion |
| References |
| Lecture 9 - The Evolution of Sex Instructor: Stephen C. Stearns. Transcript [html]. Audio [mp3]. Download Video [mov]. |
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