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SUMMARY:Why did Darwin change his mind about sex ratio? - Elliott Sober (W
 isconson\, Madison)
DTSTART:20120525T130000Z
DTEND:20120525T143000Z
UID:TALK38208@talks.cam.ac.uk
CONTACT:Tim Lewens
DESCRIPTION:*This will be a special session of the "Philosophy of Biology 
 Reading Group":http://www.hps.cam.ac.uk/seminars/biology.html - everyone i
 s welcome\, regardless of whether they have been to earlier sessions of th
 e reading group.*\n\nIn the first edition of _Descent of Man_ (1871)\, Dar
 win attempts to describe how natural selection influences the percentage o
 f males and females that a\npopulation contains. He argues that selection 
 will cause an even sex ratio to evolve when the population is monogamous\,
  but that a biased sex ratio will result when there is polygyny. Darwin wi
 thdraws this explanation in the second edition (1874) but does not explain
  why. In this lecture\, I'll explain Darwin's argument and speculate about
  why he had second thoughts.
LOCATION:Seminar Room 2\, Department of History and Philosophy of Science
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