3 - announcements 1.20.10 Student photos Biology Resource...

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announcements 1.20.10 Student photos Biology Resource Center (BRC), LILY G-414C Hours: 9-6 Monday through Thursday, 9-1 Friday, and 3-6 Sunday Bring your student ID …and smile! …you get 5 points towards your grade Email Please include BIOL 286 in the subject line to your TAs or instructo
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Population genetics Evolution The change in the genetic composition of a population from generation to generation 1. Inheritance: Mendelian genetics 2. Variation: DNA mutation 3. Change in genetic composition from generation to generation a. Natural selection b. Genetic drift c. Migration
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Mendelian genetics: how does inheritance work? Phenotype Genotype Alleles Dominance/recessive Independent assortment
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Genetics: the central dogma and mutation NEW variation arises by MUTATION a change in the base composition of DNA Figure 2.31 from Barton et al. Evolution (2006)
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Hardy-Weinberg equilibrium H-W assumptions: 1. Large, panmictic population 2. No mutation 3. No migration 4. No selection When alleles combine at random in a population, genotype frequencies will not change from one generation to the next
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Hardy-Weinberg equilibrium From Ridley Evolution (2004)
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what are the allele frequencies?
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3 - announcements 1.20.10 Student photos Biology Resource...

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