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DTSTART:20120325T030000
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DTSTART:20111030T020000
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DTSTAMP:20260506T013055Z
UID:5004044d32c74@ist.ac.at
DTSTART:20111114T164500
DTEND:20111114T174500
DESCRIPTION:Speaker: Martin Ackermann\nAbstract: According to the conventio
 nal view\, the properties of an organism are a product of nature and\nnurt
 ure - of its genes and of the environment it lives in. One would thus expe
 ct that genetically\nidentical individuals in a homogeneous environment wo
 uld all be identical. Recent experiments\nwith unicellular organisms have 
 shown that this is not the case: different individuals in clonal\nfamilies
  sometimes have markedly different properties\, and express different gene
 s. We are\ninterested in the biological significance of this variation: is
  phenotypic heterogeneity sometimes\nbeneficial\, and does natural selecti
 on promote genotypes that produce different phenotypic\nvariants in homoge
 neous environments? I will first present results that suggest that\, for t
 he\nmajority of the genes in a bacterial genome\, natural selection acts t
 o reduce variation. Then\, I will\npresent a few exception to this rule\, 
 and discuss how phenotypic variation in clonal populations of\nbacteria ca
 n promote interactions between individuals\, lead to the division of labor
 \, and give\nclonal groups of bacteria new biological properties. Finally\
 , I will briefly discuss molecular\nmechanisms underlying bacterial indivi
 duality\, and show how seemingly stochastic phenotypic\nvariation can have
  a deterministic molecular basis.
LOCATION:Raiffeisen Lecture Hall\, Central Building\, ISTA
ORGANIZER:ihetzenauer@ist.ac.at
SUMMARY:Martin Ackermann: Institute Colloquium - Beyond Nature and Nurture:
  An Evolutionary Perspective on Bact
URL:https://talks-calendar.ista.ac.at/events/440
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