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UID:20260702T110910EDT-5512NUVVpD@132.216.98.100
DTSTAMP:20260702T150910Z
DESCRIPTION:Join ºÚÁÏÍø±¬³Ô¹Ï grad Dr. Rees Kassen (University Research Chair in 
 Experimental Evolution\, Dept of Biology and Centre for Advanced Research 
 in Environmental Genomics\, University of Ottawa) for a talk on the evolut
 ion of companionship and predation. His recent work has found that most ad
 vantageous mutations have a small effect on fitness\, while a few have qui
 te large effects. For example\, some of his research reported in the journ
 al 'Nature' last year cited predation as a trigger for evolutionary bursts
 . His lab found that the bacterium Pseudomonas fluorescens (named for its 
 yellow colour)\, when well nourished\, could rapidly evolve into a new var
 iety when competing for dwindling food and oxygen inside a test tube. When
  a predator species of bacteria is introduced into the mixture\, it grazes
  on the abundant fluorescens\, reducing competition and delaying evolution
 . 'What these results mean is that we have\, for the first time since Darw
 in put forward his ideas on evolution by natural selection\, a clear pictu
 re of what natural selection 'sees' when it chooses among new mutations\,'
  says Kassen. 'Our results suggest it may be possible to predict the next 
 evolutionary 'move' of a microbial population when faced with a novel envi
 ronment. This research is essential to the endeavour of answering one key 
 question: why are there so many species in the world?'\nFree\, everyone we
 lcome
DTSTART:20080210T210000Z
DTEND:20080210T210000Z
LOCATION:Redpath Museum\, CA\, QC\, Montreal\, H3A 0C4\, 859 rue Sherbrooke
  Ouest
SUMMARY:Darwin Day Lecture: 'Dinner with the Darwins\, or How I learned eve
 rything I needed to know about evolution from a Methodist'
URL:/channels/event/darwin-day-lecture-dinner-darwins-
 or-how-i-learned-everything-i-needed-know-about-evolution-methodis-28184
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