ANT100Y1 Lecture : Biology-Lecture 1-Historical Development of Evolutionary Theory Sep 11 2008
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O sagan 24 days scale (24 days for every 1 billion years and 1 second for every 475 years) O sun formed, shortly after earth took shape. O sept. 9= beginning of solar system, sept. 25= origin of life on earth. O dec. 31= 10:30-> human like primates appear. O adaptation: traits that increase the chances of survival to leave offspring that will survive. O different species developed one from another over long periods of time. O created system: naming ranking, classifying organisms (kingdom, class, genus, species) O each category contains groups of related organisms that share common traits. O acquired characteristics could be inherited and evolved. Individuals who in their lifetime developed characteristics helpful to survival would pass those characteristics to future generations (changing physical make up -> acquired inheritance) O this evolutionary process was guided by changing environments that altered the needs of organisms.
