BIO 345 FINAL EXAM

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1.1 Origin and Aims of Evolutionary Theory How does geography affect the distribution of species? Convergent evolution, some places the species have evolved to fit the environment. Necessary and ... sufficient conditions for natural selection Variance in the population • Causes differences in fitness • Is heritable across generations Descent with modification all species, living and extinct, have descended, without interruption, from one or a few original forms of life 1.2 Life on Earth Uniformitarianism- same natural laws and processes that operate in the universe now, have always operated in the universe in the past and apply everywhere in the universe Tree of life Common ancestry of living things Interpreting phylogenetic trees Determine common ancestry Infer traits in tips based on mutation events Identify equivalent tree 1.3 Adaptation Fitness: A simple way to define fitness is to call it the number of offspring an individual leaves into the next generation (viable offspring) Both reproduction and survival components - which component is more important? The individual must reach reproductive age, but reproduction i [Show More]

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