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Related Flashcards
Related Topics
Cards In This Set
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Population Genetics
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Emphasixes the extensive genetic variation within populations and recognizes the importance of quantitative characters
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Modern Synthesis
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Emphasizes the importance of populations in evolution, the role of natural selection as the most imprtant part of evolution, and gradualism
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Population
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Localized group of individuals belonging to the same species
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Species
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Group of populations whose individuals have the potential to breed and produce fertile offspring
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Gene Pool
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Total aggregate of genes in a population at any one time
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Hardy-Weinberg Theorem
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The frequencies of alleles and genotypes in a population's gene pool remain constant over the generations unless acted upon
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Hardy-Weinberg Equation
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P^2 + 2pq + q^2 = 1
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Hardy-Weinberg Equilibrium
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1) very large plpulation size 2) no migration 3) no net mutations 4) random mating 4) not natural selection
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Microevolution
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Generation-to-generation change in a population's frequency of alleles
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The two main causes of microevolution are:
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Genetic drift and natural selection
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Genetic Drift
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A change in a population's allele frequencies due to chance
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The Bottleneck Effect
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Reduction in population, typically by natural disaster, the surviving population is no longer genetically representative of the original population
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The Founder Effect
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Colonization by a limited number of individuals from a parent population
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Natural Selection
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Differential success in the reproduction of different phenotypes resulting from the interaction of organisms with their environment
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Gene Flow
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Genetic exchange due to the migration of fertile individuals or gametes between populations
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