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APES Chapters 5 + 18 Flashcards

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4890058469CHAPTER 5CHAPTER SLIDE0
48900584703 types of Diversity1
4890058471Ecosystem diversitythe variety of ecosystems within a given region2
4890058472Species diversitythe variety of species in a given ecosystem3
4890058473Genetic Diversitythe variety of genes within a given species4
4890058474Biodiversity picture5
4890058475Biodiversity picture6
4890058476Species Richnessthe number of species in a given area7
4890058477Species Evennessthe measure of whether a particular ecosystem is numerically dominated by one species or are all represented by similar numbers of individuals8
4890058478Phylogenetic Tree9
4890058479biodiversity as an effect of Evolution10
4890058480Evolutiona change in the genetic composition of a population over time11
4890058481Microevolutionevolution below the species level12
4890058482Macroevolutionevolution which gives rise to a new species or new genera, family, class, or phyla13
4890058483Genesphysical locations on chromosomes within each cell of an organism14
4890058484Genotypethe complete set of genes in an individual15
4890058485Phenotypethe actual set of traits expressed in an individual16
4890058486Mutationa random change in the genetic code (DNA); can add to genetic diversity17
4890058487Evolution by Artificial Selectionwhen humans determine which individuals breed18
4890058488Evolution by Natural Selectionthe environment determines which individuals are most likely to survive and reproduce19
4890058489Darwin's theory of Natural Selection20
4890058490Genetic Driftchange in the genetic composition of a population over time as a result of random mating21
4890058491Bottleneck Effecta reduction in the genetic diversity of a population caused by a reduction in its size22
4890058492Founder Effecta change in a population descended from a small number of colonizing individuals23
4890058493Geographic Isolation24
4890058494Reproductive isolation25
4890058495Allopatric Speciationwhen new species are created by geographic or reproductive isolation26
4890058496Sympatric Speciationthe evolution of one species into two species in the absence of geographic isolation, usually through the process of polyploidy (an increase in the number of sets of chromosomes)27
4890058497Rate of Environmental Change28
4890058498Genetic variation29
4890058499Population Size30
4890058500Generation Time31
4890058501Range of Toleranceall species have an optimal environment in which they perform well (i.e. the limit to the abiotic conditions they can tolerate)32
4890058502Fundamental Nichethe ideal conditions for a species33
4890058503Realized Nichethe range of abiotic and biotic conditions under which a species lives -This determines the species distribution (areas of the world where it lives)34
4890058504Niche Generalistspecies that live under a wide rangde of conditions35
4890058505Niche Specialistspecies that live only in specific habitats36
4890058506Mass Extinctionwhen large numbers of species went extinct over a relatively short period of time37
4890058507The 6th Mass Extinction38

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