Evolutionary Genetics 03

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Author:
Miskozi
ID:
79495
Filename:
Evolutionary Genetics 03
Updated:
2011-04-13 22:23:18
Tags:
evolution
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Description:
evolution
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  1. Selection that constantly eliminates deleterious alleles from the population is called ________ selection.
    purifying
  2. A regime that causes an increase in the frequency of a beneficial allele and its eventual fixation is termed ________ selection.
    directional
  3. The replacement of an allele by another due to selection is known as a _______ ________.
    selective sweep
  4. What is purifying selection?
    Selection that constantly eliminates deleterious alleles from the population.
  5. What is directional selection?
    A regime that causes an increase in the frequency of a beneficial allele and its eventual fixation.
  6. What is a selective sweep?
    The replacement of an allele by another due to selection.
  7. What is delta p?
    The rate of evolution
  8. When the heterozygote has the highest fitness (wAa = 1.0), the allele frequencies will __________.
    converge towards a stable equilibrium, regardless of the inital p value.
  9. What is the equation for figuring out what the stable equilibrium will be for p and q when wAa = 1.0?
    • p(hat) = Saa/SAA + Saa
    • q(hat) = SAA/SAA + Saa
  10. How do you calculate S?
    • w = 1 - S
    • S = 1 - w
  11. If the fitness of wAA = wAa and now waa, then you know you've got _____________.
    complete dominance
  12. If wAA > wAa > waa or if wAA < wAa < waa, then you know you've got _____________.
    incomplete dominance
  13. If the incomplete dominance is perfectly additive, then if wAA = 1.0 and waa = 0.5 then wAa will equal _________.
    • the average of the two
    • 0.75
  14. If wAA < wAa > waa then you know you've got ___________.
    heterozygote advantage
  15. If you sample a population and you get 10:12:24, wAA = 1.0, wAa = 1.0, and waa = 0.8, then how do you get average fitness?
    (10*1+12*1+24*.8)/N

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