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o scent and that there is information in scent.
00:29:39 By the way buy newport cigarettes online, this is well established again--
00:29:41 it's not so well established in humans because we can't do
00:29:44 manipulation experiments-- but it is well established in
00:29:46 mice newports cigarettes coupon, that mice do this.
00:29:48 And where people make mistakes and they do mate with people who
00:29:53 have similar MHC genes, they get into a situation where
00:29:57 there are multiple spontaneous abortions.
00:30:00 So it appears not only that there is a level of selection at
00:30:05 mate choice newport 100 carton, but there is also a level of
00:30:08 rejection of zygotes that are potentially not going to resist
00:30:12 infectious disease.
00:30:14 That's work by Carole Ober at the University of Chicago,
00:30:17 working on Hutterites.
00:30:18 So interesting stuff here.
00:30:21 Now what kind of evidence have we got?
00:30:23 Well if a male produced an ornament in order to advertise
00:30:28 that he was resistant to disease,
00:30:31 then you would expect that male fitness would decrease with
00:30:35 increased parasite infection.
00:30:37 So that would be an assumption behind it;
00:30:39 that would be the selection that was driving it.
00:30:41 The condition of his ornaments should decrease with increased
00:30:46 parasite burden.
00:30:48 So the less he was able to resist the parasites marlboro gold,
00:30:51 the less dramatic an ornament he would be able to express.
00:30:55 So that means that that ornament's got to be costly.
00:30:59