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Stanisław Cebrat (Department of Genomics, University of Wrocław)
Genome evolution during speciation.
Lecture 3 (see Lecture 1, Lecture 2)
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Abstract:
We have noticed that strategy of evolution depends on intragenomic
recombination rate (crossover) and population size. In small population
strategy of complementation of haplotypes is more advantageous while for
large populations purifying selection is better.
In fact this is true only when modeling the panmictic populations. The
critical frequency of recombination, when strategy of complementation is
switched for purifying selection depends on inbreeding coefficient and the
process has a character of phase transition. Around this point many
interesting phenomena could be observed, for example very fast sympatric
speciation.
Marta Zawierta, Przemysaw Biecek, Wojciech Waga, Stanisaw Cebrat, 2007,
The role of intragenomic recombination rate in the evolution of
population's genetic pool. Theory in Biosciences, (2007) 125 (2) 123-132,
doi:10.1016/j.thbio.2007.02.002
K. Bonkowska, M. Kula, S. Cebrat and D. Stauffer, 2007, Inbreeding and
outbreeding depressions in the Penna model as a result of crossover
frequency Int. J. Mod. Phys. C. Vol. 18 (8) (in press).
S. Cebrat and D. Stauffer, Gamete recognition and complementary haplotypes
in sexual Penna ageing model arXiv:0709.2420, submitted to Int. J. Mod.
Phys. C.
W. Waga, D. Mackiewicz, M. Zawierta, S. Cebrat Sympatric speciation as
intrinsic property of expanding populations, Theory in Biosciences,(in
press) doi 10.1007/s12064-007-0010-z
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