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12 Cards in this Set
- Front
- Back
change in the genetic message of a cell
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mutation
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genetic change in populations
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evolution
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organism's tendency to produce more offspring than competing individuals, and therefore contribute more genes to the next generation
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fitness
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-the frequency of the fit traits will increase in the population
-the nature of the population will change -major force that guides genetic change and formation of new species |
natural selection
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the proportion of individuals in a certain category relative to the total number of individuals considered
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frequency
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principle that enables us to calculate and predict allelic and genotypic frequencies
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Hardy-Weinberg Principle
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equation that relates to frequencies of alleles at a particular gene locus
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p + q = 1
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equation that relates to frequencies of genotypes and phenotypes at a particular gene locus
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p^2 + 2 pq + q^2 = 1
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-population is large enough to overcome random events
-choice of mates is random -mutation does not occur -individuals do not migrate into or out of the population -no selection pressure |
assumption of a stable population for the Hardy-Weinberg principle
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-the differential reproduction of phenotypes
-some phenotypes are passed to the next generation more often than others |
selection
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factors such as temperature and predation that affect organisms and result in selective reproduction of phenotypes
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selection pressures
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group of modern species of algae that reflects an easily recognized sequence of changes as their common ancestors evolved
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Volvocine line of algae
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