Fossils, Shows similarities between extinct animals and living animals, Vestigial , Examples in humans: appendix, molar teeth, tailbone and third eyelid, DNA, When comparing the ______ of one species to another, more similarities are found in species that are more closely related, Embryological, This type of development of embryos of different species develop in similar ways, Observation, Example: Bacteria become resistant to antibiotics, Darwin, Father of evolution, Gene Pool, all the genes present in a population, Allele Frequency, # of times an allele occurs in the gene pool (%), Evolution, _________ is the change in allele frequencies, Disruptive, Describes the type of selection in which the two extremes are selected, Stabilizing, The type of selection in which the average is selected, Directional, The type of selection in which one extreme selected, Drift, Genetic _____ occurs in small populations in which one allele is more common by a chance occurrence. , bottleneck, Genetic ______ is the result of a disaster that reduces the alleles, Example: Cheetah population , Founder, Butterflies move to a new location, all the orange ended up in one place would be an example of _____________ effect. , Geographic, populations are physically separated, Temporal, timing of reproduction prevents breeding.

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