| A | B |
|---|
| natural selection | organisms best suited to an environment are most likely to survive |
| population | all the individuals of a species that live together in one place |
| evolution | a change in the genetic makeup of a species over time |
| adaptation | process by which a species becomes better suited to its environment |
| homologous | modified versions of structures from a common ancestor |
| vestigial | structures with no function; remnant of evolutionary past |
| divergence | the accumulation of differences between species |
| punctuated equillibrium | evolution occurs in periods of rapid change |
| ecological races | populations of the same species that differ genetically |
| gradualism | evolution occurs at a slow rate |
| isolation | two populations of the same species cannot breed with each other |
| extinct | when a species permanently disappears |
| industrial melanism | darkening of populations due to industrial pollution |
| speciation | process by which a new species is formed |
| reproductive isolation | inability of formerly interbreeding groups to mate/produce fertile offspring |
| palentologist | scientist that studies early life on earth using fossils |
| Beagle | Darwin's ship |
| Darwin | wrote On the Origin of Species by Means of Natural Selection |
| Malthus | unlocked Darwin's thinking with his ideas about population growth |
| Lamarck | theory of use and disuse |
