Biodiversity - variety of life, Evolution - change in a group of organisms over time, Biogeography - study of how organisms are distributed on Earth, Geographic barrier - mountains or water that separate populations, causing speciation, Speciation - formation of a new species, Homologous structures - similar bone structures indicate common ancestor, Molecular comparative biochemistry - similar amino acid sequences indicate common ancestor, Developmental comparative embryology - similar development from egg to birth indicates common ancestor, Fossil record - collection of fossils showing change over time, Common ancestor - species that multiple species evolved from, Adaptation - inherited trait increasing survival chance, Behavioral adaptation - what an organism does to survive, Structural adaptation - physical trait an organism has to survive, Natural selection - best-adapted traits survive and reproduce, Fitness - ability to survive and reproduce, Genetic drift (Founder Effect) - new population created from a small group of organisms that moved away, results in less variation, Genetic drift (Bottleneck Effect) - disaster leaves few survivors, rebuilding a population results in less variation, Gene flow - movement and breeding between populations increases variation, Gradualism - slow gradual changes over time, Punctuated equilibrium - short period of rapid change, Stasis - long period without change, Phylogenetic tree - diagram of evolutionary relationships, Support - give evidence for, Compare - show similarities, Contrast - show differences, Significant - important, Cladogram, Dendrogram,

Strand 3 - Evolution

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