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SI Bio 211
11.26.07
Population Genetics
1. _________________________________, not individuals, change genetically over time.
2. The sum total of genes in a population is called the _____________ _____________.
3. The __________________ _______________________ is how often an allele at a single
locus occurs in a population.
4. __________________ is the movement of alleles over time between populations.
5. State the Hardy-Weinberg equation:
6. Hardy-Weinberg equilibrium means that no _______________________ is occurring.
7. What are the 5 assumptions HW?
8. When does microevolution occur?
9. Contrast founder effect, bottleneck, and genetic drift.
10. What do p and q represent?
11. A _________________________ population is more likely to go through genetic drift.
12. For gene flow to occur, _______________________ must occur between populations.
13. The rate of mutation is _________________ and _________________. Most mutations
are also ___________________ or ___________________ and ___________________.
14. ______________ __________________ is the most powerful evolutionary mechanism.
15. How do mutations come about?
16. ___________________ _______________________ limits variation within a population.
17. Why does allele fixation occur?
18. Define polymorphic.
19. Why is most variation not visible?
20. What is significant about sickle cell anemia?
21. What does selection act upon?
22. Draw graphs representing directional, diversifying, and stabilizing selection.