Darwins Principles AP Biology 2010 2011 Darwins finches
Darwin’s Principles AP Biology 2010 -2011
Darwin’s finches § Differences in beaks allowed some finches to… ________________ _ u _______________ _ u AP Biology § pass successful
In historical context § Other people’s ideas paved the path for Darwin’s thinking competition: struggle for survival population growth exceeds food supply land masses change over immeasurable time AP Biology
Voyage: 1831 -1836 November 24, 1859, Darwin published “On the Origin of Species by Means of Natural Selection” AP Biology
Essence of Darwin’s ideas § _____________ exists in populations u _________________ u § more offspring than the environment can support u _________________ § for food, mates, nesting sites, escape predators u _________________ § successful traits = ____________ u AP Biology _________________ § adaptations become more common in populatio
Where does Variation come from? § ___________ u random changes to DNA § ________________ § environmental damage § ___________ u mixing of alleles § _______________ w new arrangements of alleles in every offspring § new combinations = new phenotypes AP Biology
La. Marckian vs. Darwinian view § La. Marck u in reaching higher vegetation giraffes stretch their necks & transmits the ______ longer neck to offspring § Darwin giraffes born with longer necks survive better & leave more offspring who _______ their long AP Biologynecks u
Stick your neck out… Ask Questions! AP Biology
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