Terms : Hide Images
| 6382262912 | Speciation | The origin of new species | 0 | |
| 6382265618 | Microevolution | Consists of adaptations that evolve with a population, confined to one gene pool | 1 | |
| 6382267538 | Macroevolution | Evolutionary change above the species level | 2 | |
| 6382271414 | Biological species concept | States that a species is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring; they do not breed successfully with other populations | 3 | |
| 6382281418 | Reproductive isolation | The existence of biological factors (barriers) that impede two species from producing viable, fertile offspring | 4 | |
| 6382291017 | Hybrids | The offspring of crosses between different species | 5 | |
| 6382294529 | Prezygotic barriers | Preventing fertilization: Impeding different species from attempting to mate, preventing the successful completion of mating, and hindering fertilization if mating is successful | 6 | |
| 6382302178 | Habitat isolation | Two species encounter each other rarely, or not at all, because they occupy different habitats, even though not isolated by physical barriers | 7 | |
| 6382313316 | Temoral isolation | Species that breed at different times of the day, different seasons, or different years cannot mix their gametes | 8 | |
| 6382319002 | Behavioral isolation | Courtship rituals and other behaviors unique to a species are effective barriers | 9 | |
| 6382323447 | Mechanical isolation | Morphological differences can prevent successful mating | 10 | |
| 6382325544 | Gametic isolation | Sperm of one species may not be able to fertilize eggs of another species | 11 | |
| 6382328370 | Postzygotic barriers | Preventing the viability of hybrids: Reduced hybrid viability, reduced hybrid fertility, and hybrid breakdown | 12 | |
| 6382342877 | Reduced hybrid fertility | Even if hybrids are vigorous, they may be sterile | 13 | |
| 6382349991 | Hybrid breakdown | Some first generation hybrids are fertile, but when they mate with another species or with either parent species, offspring of the next generation are feeble or sterile | 14 | |
| 6382361466 | Morphological species concept | Defines a species by structural features | 15 | |
| 6382364926 | Ecological species concept | Views a species in terms of its ecological niche | 16 | |
| 6382370985 | Phylogenetic species concept | Defines a species as the smallest group of individuals on a phylogenetic tree | 17 | |
| 6382375414 | Allopatric speciation | A type of speciation where gene flow is interrupted or reduced when a population is divided into geographically isolated subpopulations | 18 | |
| 6382386685 | Sympatric speciation | A type of speciation that takes place in geographically overlapping populations | 19 | |
| 6382389630 | Polyploidy | The presence of extra sets of chromosomes due to accidents during cell division | 20 | |
| 6382392182 | Autopolyploid | An individual with more than two chromosome sets, derived from one species | 21 | |
| 6382398034 | Allopolyploid | A species with multiple sets of chromosomes derived from different species | 22 | |
| 6382403591 | Hybrid zone | A region in which members of different species mate and produce hybrids | 23 | |
| 6382406770 | Reinforcement of barriers | Occurs when hybrids are less fit than the parent species | 24 | |
| 6382426267 | Punctuated equilibrium | A period of apparent stasis punctuated by sudden change | 25 |
