BIOLOGY 4AA3 Study Guide - Like Whoa, Actualism, Stephen Jay Gould
11 Nov 2014
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Evidence for evolution: fossil records preserved remains of an organism or its activity, mostly hard remains (i. e. made of calcium) because it is less prone to decay; aquatic organisms are most likely to be fossilized. Radiometric dating used to date rocks decay is constant and not influence by ph, salinity, etc. (uses carbon-14 isotope to measure by half-life: geographical distribution darwin observed two things, closely related but very different: galapagos islands. Finches with long beaks vs. finches with short beaks. Human hands + whale flippers: vestigial structures structures whose original function is now gone. Human tailbone/appendix: analogous structures different shapes (in terms of anatomy) but same function. Bird wings vs. bat wings: comparative development similar development stages in embryos (uhhh, molecular biology analyzes dna + protein sequences between species, haemoglobin protein; carries o in blood, cytochrome c in all organisms that need o to survive.
