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PRODID:-//Memento EPFL//
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SUMMARY:Selfish X chromosomes in Drosophila
DTSTART:20200228T140000
DTEND:20200228T150000
DTSTAMP:20260527T151231Z
UID:12896dbf676957dda151b192392626c346d54a8e57e1c8d34b256407
CATEGORIES:Conferences - Seminars
DESCRIPTION:Steve Perlman (University of Victoria)\nSelfish genetic elemen
 ts violate the rules of Mendelian inheritance in order to increase their t
 ransmission\, often at the expense of the organism. They are pervasive and
  important players in organismal ecology and evolution\, but have traditio
 nally been difficult to study because they are often cryptic. Amongthe mos
 t striking examples of selfish genetic elements are selfish X chromosomes 
 that interfere with meiosis\; these have been documents so far in insects\
 , plants\, and rodents. In insects\, males that carry a selfish 'distortin
 g' X chromosome produce a gene product that destroys Y-bearing sperm\, so 
 that they produce only (or mostly) daughters. A major outstanding question
  is to understand the ecological and evolutionary consequences of this ext
 reme sex ratio distortion. What prevents a selfish X chromosome from drivi
 ng its host to extinction? How does the rest of the genome respond to dist
 ortion? We have discovered a selfish X chromosome in a common woodland fly
 \, Drosophila testacea\, and I will present our recent work aiming to und
 erstand its ecology\, genetics\, and evolution.​
LOCATION:SV 1717 https://plan.epfl.ch/?room==SV%201717
STATUS:CONFIRMED
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