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Extensions of the coalescent effective population size
1Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA. wakeley@fas.harvard.edu
Genetics
|November 13, 2008
Summary
We propose refining the coalescent effective population size by linking it to mutation effects and removing linear dependency on actual population size. This enhances its utility for genetic data analysis and model comparison.
Area of Science:
- Population genetics
- Evolutionary biology
- Theoretical ecology
Background:
- The coalescent effective population size is a key metric in population genetics.
- Existing models may have limitations in data relevance and model comparison.
- Sjödin et al. (2005) proposed a specific framework for coalescent effective population size.
Purpose of the Study:
- To extend the coalescent effective population size framework.
- To improve the relevance of coalescent effective size to empirical genetic data.
- To facilitate comparisons between different population genetic models.
Main Methods:
- Theoretical development of coalescent effective population size.
- Recasting coalescent effective size as a mutation effective size.
- Analysis of model dependencies and mathematical existence criteria.
Main Results:
- Proposed two extensions to the coalescent effective population size.
- Advocated for recasting coalescent effective size as mutation effective size for data relevance.
- Suggested lifting the linear dependency on actual population size.
Conclusions:
- The proposed extensions enhance the applicability of coalescent effective size in genetic studies.
- Even without strict mathematical existence, Kingman's coalescent may be robust to rejection by genetic data.
- These advancements facilitate more robust population genetic inferences.
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