BIOL 226 Lecture Notes - Soapberry, Convergent Evolution, Biogeography
29 Jan 2014
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Descent with modification: a darwinian view of life: organisms are well suited to their environments i. e. great adaptations to surrounding environments. Fallacy: good design does not imply foresight: richard dawkins, natural selection is the designer of life, blind watchmaker of life. 22. 3 - ideas about change over time: the study of fossils helped to lay the groundwork for darwin"s ideas. Fossils are remains or traces of organisms from the past, usually found in sedimentary rock, which appears in layers or strata. The voyage of the beagle: voyage of the beagle: darwin collected specimens of south american plants and animals, he observed adaptations of plants and animals that inhabited many diverse environments. Darwin"s focus on adaptation: darwin perceived adaptation to the environment and the origin of new species as closely related processes. From studies made years after darwin"s voyage, biologists have concluded that this is indeed what happened to the gal pagos finches (fig 22. 6)
