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This Concept Map, created with IHMC CmapTools, has information related to: Origin of Species- Group 2, The Origin of Species Major Concept 3 Rates of Speciation, Allopatric Speciation Definition Gene flow is interrupted when a population is divided into geographically isolated areas, Reproductive Isolation Form Postzygotic Barriers, Prezygotic Barriers Type Gametic Isolation, Sexual Selection lowers gene flow by Mate choice acts as reproductive barrier, Polyploidy Definition Species may origionate from an extra set of chromosomes, The Origin of Species Major Concept 1 The Biological Species Concept, Geographic Separation with Allopatric Speciation, Hybrids Definition Offspring that result from an interspecific mating, Allopatric Speciation Evidence Regions with many geographic barriers have more species, Reproductive Isolation Form Prezygotic Barriers, Prezygotic Barriers Type Behavioral Isolation, The Origin of Species Major Concept 2 Geographic Separation, Rates of Speciation Occurs by Punctuated Equallibria, Postzygotic Barriers Type Hybrid breakdown, Prezygotic Barriers Type Habitat Isolation, The Biological Species Concept Emphasizes Reproductive Isolation, Reproduction Growth Example Fossil Records help understand how fast the growth can occur, Species Is defined by Morphological Species Concept, Postzygotic Barriers Type Reduced Hybrid Viability