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AB Ch 7
Question | Answer |
---|---|
Evolution of Whales | evidence they lived on land, from ancient land mammals |
Darwin | did not know about genetics, explained how species changed over time |
Sources of information | Malthus, Lyell, Galapagos, selective breeding |
Finches | different beaks |
Adaptation | change in behavior or appearance in response to the environment |
Natural Selection | individuals better suited survive and reproduce, ex:, separation, adaptation, division |
Evolution | pop change slowly over time |
Speciation | begins with isolation |
Trait | characteristic passed from parent to offspring |
Selective Breeding | ex:, choosing parents because of the presence of a trait, not natural selection |
Overproduction | production of many offspring, few survive |
Population | |
Limitations | starvation, disease, competition, predators |
Inherited variation | offspring are different |
Fossils | buried remains of plants and animals |
Relative age | deeper fossils= older |
Division | separated groups can not mate |
Competition | (struggle to survive) |
Successful reproduction | surviving and passing traits to offspring |
DNA | similar in closely related species |
Speciation | formation of a species, starts with isolation |
Selective breeding | breeding animals with desirable traits |
Population | same species living in the same place at the same time |
Species | look alike and produce fertile offspring |
Fossil Record | timeline of life |
Common ancestor | reason organisms share similar DNA and traits |
Resistance | insecticides |