Topic: Intragenomic Conflict
Meeting dates: April 20-22, 2009
Organizer: Francisco Ubeda de Torres (Ecology and Evolutionary Biology, Univ. of Tennessee); Andy Gardner (Ashworth Laboratories, Edinburgh, UK); Jon Wilkins (Santa Fe Institute, Santa Fe, NM)
Objectives: Two genes clash when the spread of one allele favors the spread of another allele with the opposite effect. There are two ways in which one gene can create the context for the spread of a second gene. The first is biasing transmission at a cost to the rest of the genome; the second is diverting resources to itself or related individuals. Attempts to bias transmission accounts for meiotic drive and gene conversion, while attempts to divert resources accounts for genomic imprinting and green bear effects, among others. The more interesting and realistic questions related to the evolution of Mendelian segregation, sex chromosomes, recombination and gene expression are limited by the mathematical complexity of the corresponding models.
In this workgroup we want to bring together biologists working on intragenomic conflict and mathematicians interested in evolutionary theory. The questions to be answered by the working group are: What do conflicting genes have in common? What makes them different? What is the difference between competing and conflicting genes? What do models of imprinted genes have in common? What makes them different? Is one type of modeling better than other for modeling intragenomic conflict? What is the equivalence between different types of models? What aspects of intragenomic conflict require new types of models? What are the possible outcomes of intragenomic conflict? When can we say that conflict has been resolved?
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Meeting 1 Summary. This group reviewed the field of intragenomic conflict and addressed the elusive definition of intragenomic conflict. The group also addressed conflict resolution and its possible outcomes. In addition, the group established links between intragenomic conflict and evolutionary processes, namely, what is the role of intragenomic conflict in the major transitions in evolution (mutli-level selection, higher evolution, subfunctionalization, modularity). We also discussed the role of intragenomic conflict and innovation (cross adaptive valleys, co-opt resistance for new functions, pleiotropy), genetic architecture (karyotype evolution, centromeres, recombination rate, biased gene conversion), and speciation. Once a common language and basis have been established, this discussion will be continued online.
|(Back row, L to R): Jon Wilkins, Francisco Ubeda de Torres, Sean Rice, Troy Day, David Queller, David Haig, Jack Werren, Sergey Gravilets; (Front row, L to R): Bill Rice, Kelly Dyer, Marcy Uyenoyama, Ichizo Kobayashi, Geoff Wild; (Not Pictured): Andy Gardner.|
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