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The detection and measurement of recombination from sequence data
1School of Biological Sciences, University of Sussex, Brighton BN1 9QG, United Kingdom.
Genetics
|October 8, 1999
Summary
Detecting genetic recombination requires different methods depending on whether it is rare between species or frequent within a population. New tests, like the homoplasy and incompatibility tests, are effective for measuring frequent recombination events.
Area of Science:
- Population Genetics
- Molecular Evolution
Background:
- Traditional recombination detection methods are unsuitable for high-frequency recombination within populations.
- These methods often rely on identifying nucleotide sequences with shared ancestry, which are absent during frequent recombination.
Purpose of the Study:
- To introduce and evaluate methods for detecting and quantifying frequent, repeated recombination within populations.
- To compare the relative importance of recombination versus mutation in driving genetic change.
Main Methods:
- Development of novel statistical tests, including the homoplasy and incompatibility tests.
- Simulation of populations with varied mutation and recombination rates to assess test sensitivity.
Main Results:
- The homoplasy and incompatibility tests are effective for detecting and measuring repeated recombination.
- Simulations demonstrate the sensitivity of these methods across different mutation and recombination frequencies.
Conclusions:
- Specific statistical tests are necessary for accurately assessing frequent recombination within populations.
- These methods provide a means to quantify the role of recombination relative to mutation in genetic diversification.