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AP Evolution Flashcards

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9374798241EvolutionChange in the gene pool over time Is: -Seen in populations and generations, not individuals -The result of interactions of living organisms in living systems with other life and the environment -On going process that never ends Isn't: -A change of species into a different species -Organisms do not change, populations change -A force with a purpose0
9374798242Gene PoolAll the alleles for the given population1
9374798243Hardy-Weinberg EquationEquation used to calculate the genetic variation of a population at equilibrium. p + q =1 p2 + 2pq + q2 = 1 p= AA 2pq= Aa q= aa2
9374798246Hardy-Weinberg Equilibrium-Large Population -Random Mating -No mutation -No gene flow -No natural selection3
9374798247Why allele frequencies change (5 fingers of Evolution)-Small population -Specific mating -Mutations -Gene flow -Natural selection4
9374798248Genetic DriftBoth the Bottleneck Effect and the Founder Effect, where a population goes from large to small5
9374798249Bottleneck EffectCatastrophic event changes large population to small6
9374798250Founder EffectWhen Individuals create a new population7
9374798251Gene FlowImmigration and Emigration8
9374798252MutationsChange in nucleic acids and copying, change to the DNA9
9374798253Natural SelectionSurvival and reproduction of individuals due to their differences in phenotype, and the environment around them -like the peppered moth lab and ladybug experiment Is: -A process of editing than a creative mechanism Isn't: -A force or action, but a description of what happens -Does not involve a design or purpose10
9374798254SpeciesA group of organisms that can mate with each other and have fertile offspring11
9374798255SpeciationWhen a new species develops from a previous species -comes from reproductive isolation12
9374798256Reproductive IsolationThe inability of a species to breed successfully with related species 5 main types: -Habitat Isolation -Behavioral Isolation -Temporal Isolation -Mechanical Isolation -Gametic Isolation13
9374798257Habitat IsolationWhere an animal is geographically isolated or virtually geographically isolated14
9374798258Behavioral IsolationMating may not occur if the female is not looking for what the male is offering in looks or action15
9374798259Temporal IsolationTime is not coordinated, If the days, months , or years for mating are not the same16
9374798260Mechanical IsolationWhere the parts just don't fit17
9374798261Gametic IsolationSome molecular attractant action going on with gametes and so they don't hook up18
9374798262Allopatric SpeciationSpeciation takes place in geographically different areas.19
9374798263Sympatric SpeciationSpeciation takes place in the same geographic area20
9374798264FitnessThe reproductive success of the individuals and or the population, the more offspring produced that also survive and reproduce, the greater the fitness21
9374798266Artificial SelectionHumans are deliberately choosing the traits and then breeding them Ex- Wild mustard seed plant makes cabbage, broccoli, cauliflower, etc.22
9374798267Directional SelectionConditions favor individuals exhibiting one extreme of a phenotypic range, Common when the environment changes23
9374798268Disruptive SelectionOccurs when conditions favor individuals at both extremes of a phenotypic range, An environment with two possible niches.24
9374798269Stabilizing SelectionActs against the extremes of the phenotypic ranges, and favors the intermediate range.25
9374798270Sickle Cell DiseaseSS= All cells are sickled- death NS= Half normal, half sickled, resistant to malaria NN= All normal, no resistance to malaria26
9374798271Homologous StructuresBody parts that resemble one another in different species because they have evolved from a common ancestor27
9374798272Analogous StructuresBody parts that have similar functions in different species but which have different genes and development in forming the parts28
9374798273Vestigial StructuresStructures that are greatly reduced in form and function because they are not being used29
9374798274Divergent Evolution and Adaptive RadiationSpecies that had a common ancestor diverge from each other in that there are increasing accumulating changes different from each other over time30
9374798275Convergent EvolutionDescribes two unrelated species that share similar traits31
9374798276AdaptionAny alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.32
9374798278Phylogenetic TreeA branching diagram that shows the evolutionary history of organisms and groups evolutionary similar species together33

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