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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Darwin’s theory of evolution”
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Well supported explanation of phenomena that occurred in the natural world
Change over time – process by which organisms have descended from ancient organisms |
Change over time –
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one of darwins observations
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Observed by great diversity of organisms puzzled by variety
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Ideas that shaped Darwin’s thinking-
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Numerous discoveries that turned up important pieces of evidence challenging traditional view of life
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important pieces of evidence challenging traditional view of life
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Scientists were beginning to discover that earth is very old
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Charles Lyell wrote
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“ principles of geology
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principles of geology explained
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Scientists should explain past events in terms of what they can actually observe ( the same processes that are shaping the earth today)
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Lamarck’s theory of evolution was
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among the first scientists to realize that living things change over time and also realized that organisms adapted to their environment
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Lamarck’s theory stated
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selective use or disuse of organs organisms acquired certain traits during their lifetime which could be passed on to offspring.
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( if one of your parents only works out one of their arms and gets muscle on that arm then their son or daughter will have muscle in that same arm only)
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Relative dating:
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Predicting by observing surrounding rocks
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Absolute dating:
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Where they actually tested the rocks. using the Rdaioactive decay method where
% of elements broken down. ( Half-life atoms) |
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Darwin published
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“ On the origin of species” in 1859. he proposed mechanism for evoltion which is now called “ natural selection”
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Natural variation-
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there is variation in all types of organisms.
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Artificial selection:
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( studied english farmers and breeders) humans select from among the naturally occurring variations in a species can lead to great differences.
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Survival of the fittest:
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individuals better suited to their environment survive and reproduce most successfully. Natural selection causes a change in inherited characteristics of a population over time.
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evidence of evolution
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Geographical distribution of living species, fossil record,Homologous body structures,Vestigial structures,Similarities in early development,Biochemistry
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