Biology / Bio 1785 · Capstone · 2–3 minutes
Tracing a Population's Adaptive Evolution from Mutation Through Fixation
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This capstone traces one population's adaptive evolution from a single new mutation, through the population-genetic forces that can change its frequency, to its possible fixation as directional selection favors it.
Watch for
A new mutation's early survival depends heavily on genetic drift regardless of its eventual fitness effect — a beneficial mutation can still be lost by chance before selection ever gets the chance to act on its advantage.
Builds on
- 1673Genetic Variation from Mutation and Sexual Reproduction
- 1675Neutral, Beneficial, and Deleterious Mutations
- 1741Hardy-Weinberg Equilibrium
- 1757Genetic Drift
- 1765Mutation as an Evolutionary Force, Population-Level
- 1773Directional Selection
- 1783Selection's Limits: No Perfect Organism, Not All Evolution Adaptive
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