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AP Biology Unit 7

TermDefinition
Evolution evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection
Natural Selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
Selective Pressure A selective pressure is any reason for organisms with certain phenotypes to have either a survival benefit or disadvantage
Adaptive Radiation the diversification of a group of organisms into forms filling different ecological niches.
Biological Species Concept The Biological Species Concept defines a species taxon as a group of organisms that can successfully interbreed and produce fertile offspring
Divergent Evolution
Gradualism
Punctuated Equilibrium
Reproductive Isolation
Speciation
Ecosystems
Extinction
Niche
Species Diversity
RNA World Hypothesis
Convergent Evolution
Bottleneck Effect
Founder Effect
Genetic Drift
Mutation
Population
Hardy-Weinberg Equilibrium
Migration
Null Hypothesis
Fossil
Isotope
Morphology
Vestigial Structure
Cladogram
Lineage
Molecular Clock
Out-Group
Phylogenetic Tree
Phylogeny
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