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SUMMARY:Chromosome structure in the establishment and divergence of polypl
 oids - Andrew Leitch\, QMUL
DTSTART:20111013T150000Z
DTEND:20111013T160000Z
UID:TALK31540@talks.cam.ac.uk
CONTACT:Jill Harrison
DESCRIPTION:One problem facing the establishment of polyploids is fertilit
 y. Here I examine the potential role of chromosome divergence in establish
 ing barriers between homeologues and populations\, enhancing fertility\, a
 nd leading to polyploid establishment and subsequent divergence. I look at
  the role of chromosome restructuring (especially inversions) in establish
 ing barriers to recombination and then extend that understanding to data o
 btained from natural and synthetic polyploids\, particularly in genera Tra
 gopogon and Nicotiana\, where there can be a substantial chromosomal restr
 ucturing. I consider how the organization and abundance of repeats in angi
 osperm polyploids may influence meiosis\, which in turn will influence off
 spring fertility. 
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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