BIO120H1 Lecture Notes - Falsifiability, Guanine, Plasmodium Malariae
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BIO120H1 Full Course Notes
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Galapagos finches : darwin believed it was descent with modification from a common ancestor or evolution. More finches on island than mainland; diversity matching diverse food source; mainland moved to island; large differences in sizes. Beaks of darwin"s finches in wet years: in 1973, peter and rosemary grant embarked on a study of the medium ground finch. Geospiza fortis feeds preferentially on small tender seeds abundantly available. Birds resort to larger, harder seeds in dry years: the grants found out that the beak depth changed predictably year after year. Wanted to see if evolution happen over short period of time, natural selection do over millions of years. after drought (large seeds) survivors bill longer and (wet year) shorter. Natural selection causes evolution: survival and reproduction are not random. Current research supports darwin"s hypothesis (small beak more common) Distribution of peppered moth forms in the united kingdom h. b. d. (bernard) kettlew ell. Evolution of industrial melanism in the peppered moth.