Genealogical distance under selection.
@article{Grieshammer2018GenealogicalDU, title={Genealogical distance under selection.}, author={Max Grieshammer}, journal={arXiv: Probability}, year={2018} }
We study the genealogical distance of two randomly chosen individuals in a population that evolves according to a two type Moran model with mutation and selection. We prove that this distance is stochastically smaller than the corresponding distance in the neutral model, when the population size is large. Moreover, we prove convergence of the genealogical distance under selection to the distance in the neutral case, when the system is in equilibrium and the selection parameter tends to infinity…
2 Citations
On the Simpson index for the Moran process with random selection and immigration
- Mathematics
- 2018
The object of study will be the Simpson index which measures the level of diversity of the population, one of the key parameter for ecologists who study for example forest dynamics, and which is difficult to evaluate even numerically when the population size is large.
Measure representation of evolving genealogies.
- Mathematics
- 2019
We study evolving genealogies, i.e. processes that take values in the space of (marked) ultra-metric measure spaces and satisfy some sort of "consistency" condition. This condition is based on the…
References
SHOWING 1-10 OF 24 REFERENCES
The genealogy of samples in models with selection.
- Biology, MathematicsGenetics
- 1997
It is found that when the allele frequencies in the population are already in equilibrium, then the genealogy does not differ much from the neutral case, and this is supported by rigorous results.
Ancestral Processes with Selection
- MathematicsTheoretical population biology
- 1997
The main goal is to analyze the ancestral selection graph and to compare it to Kingman's coalescent process; it is found that the distribution of the time to the most recent common ancestor does not depend on the selection coefficient and hence is the same as in the neutral case.
Genealogical processes for Fleming-Viot models with selection and recombination
- Mathematics
- 1999
Infinite population genetic models with general type space incorporating mutation, selection and recombination are considered. The Fleming– Viot measure-valued diffusion is represented in terms of a…
Tree-valued resampling dynamics Martingale problems and applications
- Mathematics
- 2008
The measure-valued Fleming–Viot process is a diffusion which models the evolution of allele frequencies in a multi-type population. In the neutral setting the Kingman coalescent is known to generate…
Tree-valued Fleming–Viot dynamics with mutation and selection
- Mathematics
- 2012
The Fleming-Viot measure-valued diffusion is a Markov process describing the evolution of (allelic) types under mutation, selection and random reproduction. We enrich this process by genealogical…
A countable representation of the Fleming-Viot measure-valued diffusion
- Mathematics
- 1996
The Fleming-Viot measure-valued diffusion arises as the infinite population limit of various discrete genetic models with general type space. The paper gives a countable construction of the process…
Fleming-Viot processes in population genetics
- Mathematics
- 1993
Fleming and Viot [Indiana Univ. Math. J., 28 (1979), pp. 817–843] introduced a class of probability-measure-valued diffusion processes that has attracted the interest of both pure and applied…
Ecole D'Ete De Probabilites De Saint-Flour Xxi-1991
- Mathematics
- 1993
Measure-valued Markov processes.- Processus de Markov: Naissance, retournement, regeneration.- Nine lectures on random graphs.