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D3: Thursday, 12/19

D3: Thursday, 12/19. Tahlia collected data for the bluejay population this summer. She calculated the allele frequencies for a certain gene (toe length). Freq A = 0.6, Freq a = 0.4. She plans to sample the population again after three generations.

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D3: Thursday, 12/19

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  1. D3: Thursday, 12/19 Tahlia collected data for the bluejay population this summer. She calculated the allele frequencies for a certain gene (toe length). Freq A = 0.6, Freq a = 0.4. She plans to sample the population again after three generations. If the allele frequencies HAVE NOT CHANGED at that time (0.6, 0.4), is the population evolving for that gene (toe length)?

  2. Key Concepts: • Genetic variability: genetic drift, gene flow, non-random mating, mutations, natural selection • Genetic equilibrium: Hardy-Weinberg principle • Speciation • Patterns of evolution: gradualism, punctuated equilibrium, adaptive radiation/divergent evolution, • convergent evolution (analogous structures), coevolution, extinction (gradual, mass)

  3. Genetic variation

  4. Factors that influence genetic variability within a population:

  5. 1.Genetic drift

  6. 2.Gene flow

  7. 3.Non-random mating

  8. 4.Mutations

  9. 5.Natural selection

  10. That list was WHAT?!

  11. Hardy-Weinberg Principle

  12. Five conditions to maintain genetic equilibrium:

  13. Speciation

  14. Types of Population (gene pool) Isolation

  15. Environmental factors

  16. Patterns of Evolution

  17. 1. Gradualism

  18. 2.Punctuated equilibrium

  19. 3. Adaptive radiation/Divergent evolution

  20. 4.Convergent evolution

  21. 5.Coevolution

  22. 6.Extinction

  23. Gradual extinction • Western Black Rhino • IUCN, 2013 (last seen 2006)

  24. Mass extinction

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