genetic drift
Let an agent explain genetic drift and its effects, relay founder effects and bottlenecks with examples, describe its place in evolutionary theory, and distinguish it from natural selection and from antigenic drift.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain genetic drift and its effects, relay founder effects and bottlenecks with examples, describe its place in evolutionary theory, and distinguish it from natural selection and from antigenic drift.
The change in the frequency of gene variants in a population due to random sampling of individuals from generation to generation rather than natural selection, strongest in small populations and illustrated by the founder effect when a new population starts from few individuals and by population bottlenecks; genetic drift is one of the main mechanisms of evolution and is distinct from antigenic drift in viruses, a separate process of gradual mutation in surface proteins that the registry lists as an alias.
What it is for: Not applicable; an evolutionary process.
It can be explain the process; relay examples and models; describe its role in evolution; distinguish from selection and antigenic drift.
Distinguishing features
Random sampling
Stronger in small populations
Loss of variation
Neutral theory basis
What it looks like
Not visible; changes in allele frequencies shown in models and data.
How it is recognised
Random change in allele frequencies
Founder effect and bottlenecks
Natural selection is non-random; antigenic drift is viral mutation
Related models
is a kind of - in registry terms
is contrasted with - the non-random mechanism
is illustrated by - a special case
is modelled by - in population genetics
In practice
Families and kinds
drift in small populations
founder effect
population bottleneck
drift in neutral theory of molecular evolution
drift in conservation genetics
antigenic drift and shift as a separate viral concept
Standards and regulation
No regulation; conservation genetics guidelines on effective population size
Failure modes and hazards
Confusing drift with selection
Confusing with antigenic drift
Misjudging effective population size
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What genetic drift is.
Science.
Definition
Definition.
Definition
Definition.
- What is genetic drift, and why is it stronger in small populations? definition
- Is the question about genetic drift or antigenic drift in viruses? boundary
Cases
Founder effects and bottlenecks.
Cases
Cases.
- How do founder effects and bottlenecks work, with examples such as island populations and cheetahs? definition
- Which entry fits founder effect? action
Theory Theory and models.
Science.
Models
Models.
Models
Models.
- How do the Wright-Fisher and Moran models describe drift, and what is effective population size? provenance
- Which references are standard? provenance
Neutral
Neutral theory.
Neutral
Neutral.
- What is the neutral theory of molecular evolution, and what debates surround it, with positions attributed? provenance
- Which sources are cited? provenance
Apply Applications.
Practice.
Conservation
Conservation.
Conservation
Conservation.
- How does drift affect small and endangered populations, and how is it managed? provenance
- Which entry fits conservation genetics? action
Human
Human populations.
Human
Human.
- How has drift shaped human genetic variation and founder populations, as research shows? provenance
- Is the presentation free of misuse of population genetics for group claims? boundary
Context History and comparison.
Context.
History
History.
History
History.
- How did Wright, Fisher and Kimura develop the theory of drift? provenance
- Which entry fits the history of population genetics? action
Viral
Antigenic drift.
Viral
Viral.
- What are antigenic drift and shift, and why is the naming different? provenance
- Which entry fits antigenic drift? action
What the second pass must settle
- Should founder effect be a separate entry?
- How should population genetics references be linked?
- The registry entry has a merged alias naming an unrelated viral process; should it be split off?