IB35ACS Study Guide

Americans that were here before bitch ass columbus

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Unformatted text preview: nnot reproduce ■ monotypic: only one subspecies ■ polytypic: multiple subspecies within species ○ Evolutionary Species Concept: a lineage that maintains its integrity with respect to other lineages through both time and space ● mean = the average of all the items in a sample (μ) ● variance = a measure of how spread out your data are (the mean of the squares of differences between the respective samples and their mean) (σ^2) ○ Total variance= gene variance + environment variance ● ● standard deviation (σ): = square root of the average squared deviation from the mean (square root of the variance) ○ tells you the dispersal around the mean in the units of your original data. ○ ● statistical significance: measure of how much evidence we have against null hypothesis ● Populational Approach to Variation ○ No individual is the “ideal” ● ● ● ● ● ○ you include time and geography Some Old World monkeys: largest and most diverse primate families today (Macaques- genus Macaca, Gelada baboons- genus Theropithecus, Baboons- genus Papio) What might make population split? ○ Four forces of evolution (drift, selection, mutation, migration), Speciation events Types of speciation events ○ allopatric: between populations that are geographically isolated ■ re- established contact: what can happen? ● hybridization and therefore no speciation ● isolation of gene pools (speciation) ○ mechanisms: premating (what are you?), postmating (egg &...
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