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AP Biology: Evolution Flashcards

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5208015144MicroevolutionChange in allele frequencies in a population over generations.0
5208015145MacroevolutionEvolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups1
5208015146Hardy-Weinberg Equationp² + 2pq + q² =12
5208015147Gene flowMovement of alleles into or out of a population due to the migration of individuals to or from the population. It INCREASES diversity.3
5208015148MutationsRandom errors in gene replication that lead to a change in the sequence of nucleotides. The source of all genetic diversity.4
5208015149Nonrandom matingIndividuals choose their mates for a specific reason.5
5208015150Natural SelectionA process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.6
5208015151Genetic DriftA change in the gene pool of a population due to chance. It LIMITS diversity.7
5208015152Bottleneck EffectWhen a population has been dramatically reduced, and the gene pool is no longer reflective of the original population's. It LIMITS diversity.8
5208015153The Founder EffectWhen a small population breaks away from a larger one to colonize a new area, it is most likely not genetically representative of the original larger population.9
5208015154Gene PoolAll of the alleles in all the individuals that make up a population10
5208015155HeterozygousAn organism that has two different alleles for a trait11
5208015156HomozygousHaving two identical alleles for a particular gene12
5208015163LinnaeusInvented binomial nomenclature13
5208015167Lamarckinheritance of acquired characteristics14
5208015169DarwinEnglish natural scientist who formulated a theory of evolution by natural selection15
5208015170Stabilizing SelectionNatural selection in which intermediate phenotypes survive or reproduce more successfully than do extreme phenotypes.16
5208015171Disruptive SelectionIncreases the extreme types in a population at the expense of intermediate forms. Over great lengths of time, disruptive selection may result in the formation of two new species.17
5208015172Directional SelectionNatural selection in which individuals at one end of the phenotypic range survive or reproduce more successfully than do other individuals.18
5208015174Artificial SelectionHumans breed plants and animals by seeking individual with desired traits as breeding stock.19
5208015177FitnessHow well an organism can survive and reproduce in its environment20
5208015178Adaptive evolutionAn evolutionary process that is directed by natural selection, which makes a population better adapted to live in an environment.21
5208015187Independent Assortmentthe law by which genes on different chromosomes are inherited independently of each other22
5208015188Crossing overNonsister chromatids exchanging DNA segments.23
5208015189Random FertilizationThe combination of each unique sperm with each each unique egg24
5208015190Diploidhaving two sets of chromosomes25
5208015191HaploidCell that has half the number of chromosomes as body cells26
5208015192Heterozygote advantagegreater reproductive success of heterozygous individuals compared with homozygotes; tends to preserve variation in a gene pool27
5208015198Homologous StructuresStructures that come from the same ancestor...have a common origin and reflect a common ancestry.28
5208015199Analogous StructuresSimilar in function but not structure, like the wing of a bat and the wing of a butterfly.29
5208015201Convergent EvolutionThe process by which unrelated species become more similar as they adapt to the same kind of environment30

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