J. Peter Gogarten, Professor of Molecular and Cell Biology, University of Connecticut.
Currently, Fulbright Fellow and Visiting Professor, The Edmond J. Safra Bioinformatics Program, Tel-Aviv University.

Title: “The intertwined evolutionary histories of marine Synechococcus and Prochlorococcus.”  
Time: Wednesday 11 November, at 10:10 (refreshments at 09:45)
Place: Schreiber building, room 309.

The presentation will discuss phylogenetic approaches to detect horizontal gene transfer events with a focus on bipartition and quartet decomposition analysis.  The advantages of quartet decomposition using embedded quartets will be discussed and illustrated in an analysis of Prochlorococcus and marine Synecchococcus genomes.   Quartet decomposition allows identification of the plurality phylogenetic consensus, of gene families that conflict with this plurality, and of gene families whose phylogeny agrees more with geographical or physiological gradients than with the plurality signal.