BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4//
BEGIN:VEVENT
UID:20260808T173029EDT-9006niXtbT@132.216.98.100
DTSTAMP:20260808T213029Z
DESCRIPTION:The speaker:  Hervé Philippe\n \nTitle: Phylogenomics of\nanima
 ls\n \nAbstract:\n \nThe metazoan phylogeny has undergone major rearrangem
 ents at the\nend of the nineties. However\, the resolution was rather poor
 \,\npreventing to draw any firm conclusions. Phylogenomics\, with the\nava
 ilability of large sets of sequences\, is usually expected to\nincrease th
 e resolving power of molecular phylogenetic inference\,\nleading potential
 ly to fully resolved tree. Unfortunately\, numerous\nphylogenomic trees of
  animals have been recently published and not\nonly resolution is often po
 or and but also results are regularly\ncontradictory. I will explore the r
 easons of these apparently\ndeceiving results:\n(1)   Inadequate selection
  of sequences\n(non-orthologous sequences\, saturated genes).\n(2)   Inade
 quate taxon sampling\n(3)   Inadequate tree reconstruction method. When mo
 re\nand more data are considered\, although stochastic error vanishes\,\ns
 ystematic error becomes more apparent. Such errors are due to the\nimperfe
 ction of models of sequence evolution.\n(4)   Rapid diversification of ani
 mal phyla (Cambrian\nexplosion). Lack of resolution is generally interpret
 ed as evidence\nof closely spaced speciation events. Molecular dating may 
 allow to\ntest this hypothesis.\nIn conclusion\, I will present my view on
  the phylogenetic\nrelationships of animals.\n \n
DTSTART:20090312T220000Z
DTEND:20090313T003000Z
LOCATION:Leacock Building\, CA\, QC\, Montreal\, H3A 2T7\, 855 rue Sherbroo
 ke Ouest
SUMMARY:Monbug Seminar
URL:/channels/event/monbug-seminar-105161
END:VEVENT
END:VCALENDAR