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APES-Chapter 5 Flashcards

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5786434132species richnessThe number of species in an area.0
5786434133species evennessThe relative proportion of individuals within the different species in a given area.1
5786438963phylogenythe branching pattern of evolutionary relationships.2
5786440005biodiverityThe variety of life in a given ecosystem.3
5786441873microevolutionThe evolution below the species level.4
5786443535macroevolutionMajor evolutionary change involving the whole taxonomic groups.5
5786445503phenotypeThe organism's set of traits that are expressed.6
5786446219genotypeThe organism's sets of genes.7
5786446658mutationThe random change in an organism's genetic code.8
5786447642recombinationthe process by which a segment of the chromosome breaks off and attaches to another chromosome.9
5786448869artificial selectionHumans determine which individuals to breed that will result to certain sets of traits.10
5786451904natural selectionEnvironment determines which individuals to survive and reproduce.11
5786453255gene flowWhen individuals move from one population to another creating a change in the genetic composition in both groups.12
5786455766genetic driftA change in the genetic composition of a population over time as a result of random mating.13
5786460969bottleneck effectA reduction in the genetic diversity of a population caused by a reduction in its size.14
5786464222founder effectA change in the genetic composition of a population as a result of descending from a small number of colonizing individuals.15
5786466546geographic isolationPhysical separation of a groups of individuals from others of the same species.16
5786474859allopatric isolationThe process of speciation caused by geographic isolation.17
5786527787reproductive isolationWhen species from the same population can no longer interbreed and produce offspring resulting from evolutionary separation.18
5786554740Sympatric speciationThe evolution of the species into two, without geographic isolation.19
5786559328Genetically Modified OrganismThe resulting organism from copying genes from a species and inserting them into another species.20
5786562427range of toleranceOrganisms can survive a certain range of abiotic factors but too little or too much may also affect their survival.21
5786568016Fundamental nicheThe suite of abiotic conditions under which a species can survive, grow, and reproduce.22
5786570598Realized nicheThe range of abiotic and biotic conditions under which a species actually lives.23
5786572445DistributionAreas of the world in which the species lives.24
5786573494niche generalistA species that can live under a wide range of abiotic or biotic conditions.25
5786573495niche specialistA species that is specialized to live at a specific habitat or to feed on a small group of species.26
5786583703mass extinctionA large extinction of species in a relatively short period of time.27

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