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Unformatted text preview: food In sexually reproducing species there is a large amount of variation Much of variation is inheritable 18 and 19 Centuries Charles Darwin:the Theory of Evolution Darwin has two basic parts. Evolution, which he called "descent with Evolution modification" is the process. process Natural selection of the most fit organisms is the mechanism for the process of evolution A good website:
http://en.wikipedia.org/wiki/Charles_Darwin The Hardy-Weinberg theorem describes a non evolving population. Large population Isolation No net mutations Random mating No natural selection Factors which contribute to evolution in a population Genetic drift Natural selection due to environmental changes The bottleneck effect A founder population The 20 and 21 Centuries Gould and Eldridge propose the theory of punctuated Gould Eldridge equilibrium That species accumulate a number of neutral mutations When the number of neutral mutations reaches a critical mass change occurs That there are periods of great change brought on by extreme changes in the environment Kingdoms and Domains 2-3 kingdoms Initially there were only animals and plants In 1866 Ernst Heinrich proposed a third kingdom, the protista that included protozoa, algae, fungi and bacteria Kingdoms and Domains Whittaker's 5 kingdoms He based his classification on: A separation of the prokaryotes from the eukaryotes, putting the prokaryotes in the Monera The other four kingdoms are created on the basis of: Mode of nutrition (this was Whittaker's Life cycle Structure
primary distinction) Kingdoms and Domains Whittaker's 5 kingdoms These four kingdoms are:
nutritional modes ingestors Protista unicellular, diverse Animalia heterotrophic, Fungi saprophytic Plantae photosynthetic
autotrophs Kingdoms and Domains Five Kingdoms
Monera Protista Plantae Fungi Animalia Kingdoms and Domains Two Kingdoms of Monera Monera
Eubacteria Archaebacteria Kingdoms and Domains Dividing Protista into 3 Kingdoms
Protista Archezoa Protista Chromista Eight Kingdoms
Prokaryotes Eubacteria Archaebacteria Eukaryotes Archezoa Protista Chromista Plantae Fungi Animalia Kingdoms and Domains Three Domains Eubacteria
Archaebacteria Eukaryota The Endosymbiotic Theory Lynn Margulies While at Boston University, Margulis proposed a radical idea, endosymbiotic theory. The endosymbiotic theory is a suggestion of how organelles came int...
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