multiple mating but not recombination causes quantitative increase in offspring genetic diversity for varying genetic architectures多个交配而不是重组原因定量后代遗传多样性的增加不同的遗传结构.pdfVIP

Multiple Mating But Not Recombination Causes Quantitative Increase in Offspring Genetic Diversity for Varying Genetic Architectures 1 2 3 Olav Rueppell *, Stephen Meier , Roland Deutsch 1 Department of Biology, University of North Carolina, Greensboro, North Carolina, United States of America, 2 Department of Physics and Astronomy, University of North Carolina, Greensboro, North Carolina, United States of America, 3 Department of Mathematics and Statistics, University of North Carolina, Greensboro, North Carolina, United States of America Abstract Explaining the evolution of sex and recombination is particularly intriguing for some species of eusocial insects because they display exceptionally high mating frequencies and genomic recombination rates. Explanations for both phenomena are based on the notion that both increase colony genetic diversity, with demonstrated benefits for colony disease resistance and division of labor. However, the relative contributions of mating number and recombination rate to colony genetic diversity have never been simultaneously assessed. Our study simulates colonies, assuming different mating numbers, recombination rates, and genetic architectures, to assess their worker genotypic diversity. The number of loci has a strong negative effect on genotypic diversity when the allelic effects are inversely scaled to locus number. In contrast, dominance, epistasis, lethal effects, or limiting the allelic diversity at each locus does not significantly affect the model outcomes. Mating number increases colony genotypic variance and lowers variation among colonies with quickly diminishing returns. Genomic recombination rate does not affect intra- and inter-colonial genotypic variance, r