A review of all the vocabulary
Terms : Hide Images
| 5096216302 | speciation | Origin of new species and the source of biological diversity. |  | 0 |
| 5096216303 | biological species concept | Species is a group of populations whose members have the potential to produce fertile offspring. |  | 1 |
| 5096216304 | reproductive isolation | Barriers that impede members of two different species fro producing fertile offspring. |  | 2 |
| 5096216305 | prezygotic barriers | Barriers that impede mating or hinder fertilization. |  | 3 |
| 5096216306 | habitat isolation | When two species encounter each other only rarely. |  | 4 |
| 5096216307 | temporal isolation | When two species breed at different times of day, season, or years. |  | 5 |
| 5096216308 | behavioral isolation | Incompatible courtship rituals, pheromones, or bird songs. |  | 6 |
| 5096216309 | mechanical isolation | Morphological differences prevent fertilization. |  | 7 |
| 5096216310 | gametic isolation | When sperm can't fertilize the eggs. |  | 8 |
| 5096216311 | postzygotic barriers | Barriers that prevent the hybrid zygote from becoming a fertile adult. |  | 9 |
| 5096216312 | reduced hybrid viability | When the genes of different species interact and impair hybrid development. |  | 10 |
| 5096216313 | reduced hybrid fertility | Sterile hybrids due to uneven chromosome number. |  | 11 |
| 5096216314 | hybrid breakdown | Hybrid is fertile, but when they breed the next generation is sterile. |  | 12 |
| 5096216315 | allopatric speciation | When a population is divided; leads to speciation. |  | 13 |
| 5096216316 | sympatric speciation | Speciation without a divided population. |  | 14 |
| 5096216317 | polyploidy | In plants, the result of an extra set of chromosomes during cell division. |  | 15 |
| 5096216320 | adaptive radiation | Evolution of many new species from a common ancestor as a result of introduction to new environments. | 16 | |
| 5096216321 | punctuated equilibrium | A model of evolution in which a new species will change the most as it buds from a parent species, and then will change little for the rest of its existence. |  | 17 |
| 5096216322 | gradualism | A model of evolution in which gradual change over a long period of time leads to biological diversity. |  | 18 |
| 5096216323 | phylogeny | Evolutionary history of a species or group of species. |  | 19 |
| 5096216325 | analogy | Anatomical similarity due to convergent evolution. |  | 20 |
| 5096216326 | homoplasies | Analogous structures that have evolved independently. |  | 21 |
| 5096216327 | taxonomy | A classification of organisms into groups based on similarities. |  | 22 |
| 5096216328 | bionomial nomenclature | Scientific name. |  | 23 |
| 5096216329 | genus | First part of scientific name. |  | 24 |
| 5096216331 | phylogenetic trees | Branching diagrams that depict hypotheses about evolutionary relationships. |  | 25 |
| 5096216332 | cladogram | Diagram that shows patterns of shared characteristics. |  | 26 |
| 5096216333 | clade | A taxonomic grouping that includes only a single ancestor and all of its descendants. |  | 27 |
| 5096216334 | cladistics | A phylogenetic classification system that uses shared derived characters and ancestry as the sole criterion for grouping taxa. |  | 28 |
| 5096216335 | monophyletic group | A taxonomic grouping that includes an ancestral species and all of its descendants. |  | 29 |
| 5096216336 | paraphyletic group | A monophyletic group in which some descendants of the common ancestor have been removed. |  | 30 |
| 5096216337 | polyphyletic group | A taxonomic grouping consisting of several species that lack a common ancestor (more work is needed to uncover species that tie them together into a monophyletic clade). |  | 31 |
| 5096216338 | shared primitive character | Trait shared beyond the taxon. |  | 32 |
| 5096216339 | shared derived character | Evolutionary novelty unique to that clade. |  | 33 |
| 5096216340 | outgroups | Species or group of species closely related to the ingroup. |  | 34 |
| 5096216341 | phylograms | Diagram in which the length of a branch reflects number of changes in a DNA sequence. |  | 35 |
| 5096216342 | maximum parsimony | "Occam's Razor." A principle that states that when considering multiple explanations for an observation, one should first investigate the simplest explanation that is consistent with the facts. |  | 36 |
