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Selection that constantly eliminates deleterious alleles from the population is called ________ selection.
purifying
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A regime that causes an increase in the frequency of a beneficial allele and its eventual fixation is termed ________ selection.
directional
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The replacement of an allele by another due to selection is known as a _______ ________.
selective sweep
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What is purifying selection?
Selection that constantly eliminates deleterious alleles from the population.
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What is directional selection?
A regime that causes an increase in the frequency of a beneficial allele and its eventual fixation.
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What is a selective sweep?
The replacement of an allele by another due to selection.
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What is delta p?
The rate of evolution
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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.
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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
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If the fitness of wAA = wAa and now waa, then you know you've got _____________.
complete dominance
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If wAA > wAa > waa or if wAA < wAa < waa, then you know you've got _____________.
incomplete dominance
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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
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If wAA < wAa > waa then you know you've got ___________.
heterozygote advantage
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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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