Terms : Hide Images
| 2412689583 | speciation | the formation of a new species, which increases biodiversity and occurs when one species splits into two | 0 | |
| 2412693719 | reproductive barriers | serve to isolate the gene pools of species and prevent interbreeding | 1 | |
| 2412699154 | prezygotic barriers | reproductive barriers that occur before a zygote forms | 2 | |
| 2412704264 | postzygotic barriers | reproductive barriers that occur after a zygote forms | 3 | |
| 2412711154 | prezygotic barriers | habitat isolation, temporal isolation, behavioral isolation, mechanical isolation, gametic isolation | 4 | |
| 2412721766 | postzygotic barriers | reduced hybrid vitality, reduced hybrid fertility, hybrid breakdown | 5 | |
| 2412755258 | habitat isolation | different habitats | 6 | |
| 2412756681 | temporal isolation | breeding at different times | 7 | |
| 2412757885 | behavioral isolation | different courtship rituals | 8 | |
| 2412761848 | mechanical isolation | incompatible reproductive parts | 9 | |
| 2412763474 | gametic isolation | incompatible gametes | 10 | |
| 2412765925 | reduced hybrid vitality | short-lived hybrids | 11 | |
| 2412767479 | reduced hybrid fertility | sterile hybrids | 12 | |
| 2412768578 | hybrid breakdown | fertile hybrids with sterile offspring | 13 | |
| 2412771173 | allopatric speciation | geographic barrier blocks gene flow, so each separate populations evolves to its own environment | 14 | |
| 2412774482 | sympatric speciation | a new species arises within the same geographic area as its parent species | 15 | |
| 2412784584 | cause reduced gene flow, and lead to sympatric speciation | polyploidy, habitat differentiation, sexual selection | 16 | |
| 2412791714 | polyploid | an organism that has more than 2 complete sets of chromosomes as a result of an accident of cell division | 17 | |
| 2412805838 | adaptive radiation/ diverging evolution | the evolution of many diverse species from a common ancestor | 18 | |
| 2412807592 | hybrid zone | region in which members of different species meet and mate to produce some hybrid offspring | 19 | |
| 2412843938 | reinforcement | hybrid offspring are less fit than members of both parent species, so reproductive barriers are reinforced to keep the species separate/from interbreeding | 20 | |
| 2412851713 | fusion | reproductive barriers aren't strong, and so much gene flow can occur that speciation reverses, and 2 species become 1 | 21 | |
| 2412861285 | stability | species remain the same (no speciation or reverse speciation) | 22 | |
| 2412872126 | punctuated equilibrium | species change most as they arise from an ancestral species and then change relatively little for the rest of their existence | 23 | |
| 2412889142 | gradualism | species evolve gradually | 24 |
