Stanisław Cebrat (Department of Genomics, University of Wrocław) Genome evolution during speciation. Lecture 3 (see Lecture 1, Lecture 2)

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