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Darwin/Nat.Selection

7-3 Ch 13 - Darwin and Natural Selection

QuestionAnswer
a structure or behavior that helps an organism survive adaptation
a change in a species over time evolution
the process by which organisms acquire adaptations natural selection
the islands that Darwin visited helping him shape his ideas on evolution Galapagos
differences in a strucutre 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
separation of populations of the same species by geography or events (river, ocean, mountain, volcano..) isolation
How do new species form? From adapting to conditions differently after separation through isolation
an adaptation that is a physical feature / part of the body structural
an adaptation that is an action / something it does behavioral
what are organisms that Darwin studied on the Galapagos that have similar yet different forms compared to South America Cormorants (wing differences) and Iguanas (skin color and claw differences)
What happens in natural selection? organisms with more favorable variations survive to reproduce
things in the environment that make it challenging for organisms to survive - some are selected FOR and some AGAINST environmental pressure
what happens to an individual when an environment changes? they either HAVE an adaptation or they don't - they may die or at least suffer if they don't
what are organisms on Galapagos that showed different forms on different islands? finches with different beaks, land/marine iguanas, tortoises with different shells
what other evidence did Darwin use for his theory? selective breeding (artificial selection) and fossils (among others)
Created by: jenhaugen01
 

 



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