Key Concepts

CONCEPT 6.1 Evolution can be viewed as genetic change over time or as a process of descent with modification.

CONCEPT 6.2 Natural selection, genetic drift, and gene flow can cause allele frequencies in a population to change over time.

CONCEPT 6.3 Natural selection is the mechanism for adaptive evolution.

CONCEPT 6.4 Long-term patterns of evolution are shaped by large-scale processes such as speciation, mass extinction, and adaptive radiation.

CONCEPT 6.5 Ecological interactions and evolution exert a profound influence on one another.

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