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13 Cards in this Set
- Front
- Back
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population
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group of species living in same area. interbreed produce fertile offspring
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gene pool
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all alleles at all gene loci in a pop
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evolution
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change in genetics (allele frequencies) over time
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hardy-weinberg
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used to asses evolution states that freq of alleles won't change over time as a result of random mating. No evolution!
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5 assumptions of Hardy-weinberg
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very larger pop, mating is random, no mutations, no migration, no natural selection
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why populations actually do change
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natural selection, gene flow, genetic drift
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natural selection
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individuals with certain inherited traits more likely to survive produce more offspinrg
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gene flow
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migration of individuals to new pops
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genetic drift
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changes in a pop allele frequ;ency due to random chance (generally in small opulations) bottlenext, founder
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bottlenext effect
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sever drop in pop size
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founder effect
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small group moves somewhere else
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genetic fixation
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one allele becomes only allele in population . loss of all but one allele
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chi squared test
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observed difference from expect?? helps determine if differences are actual.
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