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BIO 110, Life Science

BIO 110, Life Science. Summer 2012. Readings. Text pp. 260-264: Selection pp. 271-277 (speciation), look over the rest of Chapter 14 Chapter 13: population evolution Wikipedia http:// en.wikipedia.org/wiki/Panmixia. Panmixia.

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BIO 110, Life Science

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  1. BIO 110, Life Science Summer 2012

  2. Readings • Text • pp. 260-264: Selection • pp. 271-277 (speciation), look over the rest of Chapter 14 • Chapter 13: population evolution • Wikipedia • http://en.wikipedia.org/wiki/Panmixia

  3. Panmixia • Equal probability of sexual reproduction with any potential mate • Theoretical limiting case used by population geneticists • Some organisms approach panmixia, but uncommon

  4. Selection • Higher reproductive output = greater contribution to the next generation • Some examples • Selection is often equated with adaptation, but this can be misleading • Some examples • Selection doesn’t play well with panmixia

  5. Speciation • Speciation is the antidote to sex • What are species? • Separate species mean separate packages of adaptive features. • Restriction of interbreeding • Before fertilization • After fertilization

  6. Evolutionary biology • Speciation is a key process • Genetics of individuals and populations • Evolution of diversity

  7. Inheritance • Genes and alleles • Dominant and recessive • Simple and complex • The effects of selection

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