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Natural Selection
Darwin - Evolution - Natural Selection
Question | Answer |
---|---|
a structure or behavior that helps an organism survive | adaptation |
a change in a species over time | evolution |
the process by which evolution occurs; organisms with more favorable variations survive to reproduce | natural selection |
the islands that Darwin visited helping him shape his ideas on evolution | Galapagos |
differences in a structure or behavior within a population | variations |
fighting over limited resources, either within a population or between populations of different species | competition |
the scientist that first published the accepted theory of evolution | Charles Darwin |
the ship that Darwin sailed on in the 1830's | HMS Beagle |
the title and date of Darwin's book | On the Origin of Species, 1859 |
a group of similar organisms that can interbreed and produce fertile offspring | species |
preserved plant and animal remains | fossil |
body parts in different organisms that are similar in structure and probably were passed on by a common ancestor | homologous structure |
an example of homologous structures in mammals | bat wings, whale fins and cat paws |
the four needs of an organism that are met by its habitat | food, water, shelter and a place to raise young |
separation of populations of the same species by geography or events (river, ocean, mountain, volcano..) | isolation |
types of evidence that scientists use to determine evolutionary history | fossils, DNA, similarities in development and body structures |
How do new species form? | From adapting to conditions differently after separation through isolation and/or continental drift |
A branching tree diagram showing evolutionary relationships | cladogram |