| A | B |
|---|
| evolution | change in gene pool over time |
| fossil | preserved remains of ancient organisms |
| artificial selection | humans chose the traits that are passed on or favored |
| natural selection | evironment selects the traits that are favored and passed on |
| Lamarck's hypothesis | scientist suggested acquired traits can be passed to offspring |
| adaptation | heritable trait that increases an organisms' chance for survival |
| fitness | how well an organism can survive and reproduce in an environment |
| homologous structures | structures that are similar in different species indicating common ancestor |
| analogous structures | body parts that share a common function but not common structure, like birds wing and butterfly wing |
| vestigial structure | structure inherited from ancestors but has lost much or all of its original function |
| species | group of similar organisms that can breed and produce fertile offspring |
| speciation | formation of a new species |
| camouflage | adaptation that allows organism to blend in with its environment |
| mimicry | adaptation when a non-poisonous organism looks very similar to a poisonous species |
| cladogram | diagram depicting shared characteristics among species |
