Tracing a Population's Adaptive Evolution from Mutation Through Fixation
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
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
- 1673 Genetic Variation from Mutation and Sexual Reproduction
- 1675 Neutral, Beneficial, and Deleterious Mutations
- 1741 Hardy-Weinberg Equilibrium
- 1757 Genetic Drift
- 1765 Mutation as an Evolutionary Force, Population-Level
- 1773 Directional Selection
- 1783 Selection's Limits: No Perfect Organism, Not All Evolution Adaptive
Unlocks
- Nothing yet depends on this.