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13 Cards in this Set
- Front
- Back
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Migration
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- Movement of individuals from one area to another.
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Gene Flow
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- Movement of genes from one pop to another
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Population Differentiation
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Island Model Concept
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- Basic Concept: If individuals move with equal probability among all discrete pops
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Stepping- Stone Model Concept
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- Individuals migrate to pops closest to them, speeding genes in a stepping stone fashion. - Gene flow limits the differentiation of adjacent pops and abrupt changes in characteristics of a pop will be associated with geographical features that severely reduce movement
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Glochidia
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Interpret Fig 9.1
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- Populations converge to a allelic freq equal to the average freq across pops - more powerful as migration rate increases
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Break Down and Define Equation 9.1
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- q1 = m(q(immigrant) - q0) + q0. - allelic freq after 1 generation
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Break Down and Define Equation 9.2
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- Change in q = m(q^m - q0). - result of migration rate and difference in allelic frequency
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Break Down and Define Equation 9.3
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q{t} - q{m} = (1-m)^t (q0 + q{m}). - calculate migration rate between 2 pops.
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Break Down and Define Equation 9.11
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- qhat = sqrt*(m/s). - the freq of alleles that is in equilibrium between migration and selection
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Break Down and Define Equation 9.13
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Population Genetic Structure of the 3 Freshwater Mussel Species
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- Elliptico dilatata: little genetic variation within a pop, a lot if variation between pops. - Quadrula quadrula: a lot if variation within and little between. - - -Amblema plicata: small streams little variation within a lot of variation between
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