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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%" height="26">Autor</th> <th class="thCornerR">Wiadomość</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>john2072</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/xeon/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Sob 14:36, 05 Mar 2011<span class="gen"> </span> Temat postu: On the Makaloa Mat LondonJack Publishedaambtf</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">ngest ears you'll succeed in increasing the average in <br />later generations. For a while. But if you continue to breed from those with <br />the longest ears there will come a time when the necessary variation is no <br />longer available. They'll all have the 'longest' earsand evolution will grind <br />to a halt. In normal evolution this sort of thing is not a problembecause <br />most environments don't carry on exerting consistent and unswerving <br />pressure in one direction. The 'best' length for any particular bit of an <br />animal will normally not be 'a bit longer than the present averagewhatever <br />the present average may be'. The best length is more likely to be a fixed <br />quantitysay three inches. But sexual selection really can have the embar- <br />rassing property of chasing an ever-driving 'optimum'. F <span style="font-weight: bold"><a href="http://www.louisvuittonclearances.com/" target="_blank" class="postlink">wholesale louis vuitton bags</a></span><span style="font-weight: bold"><a href="http://casualmbtshoesclearance.com/" target="_blank" class="postlink">ema</a></span>le fashion <br />really could desire ever longer male earsno matter how long the ears of the <br />current population might already be. So variation really could seriously run <br />out. And yet sexual selection does seem to have worked; we do see absurdly <br />exaggerated male ornaments. We seem to have a paradoxwhich we may call <br />the paradox of the vanishing variation. <br />Lande's solution to the paradox is mutation. There will always be enough <br />mutationhe thinksto fuel sustained selection. Tyilai: <br /><a href="http://www.jordanheelsoutlet.com" target="_blank" class="postlink">nike high heels</a> <br /> <br /> <br /> <a href="http://www.khmerpyroo.com/forumming/index.php?topic=144972.msg367077#msg367077" target="_blank" class="postlink">http://www.khmerpyroo.com/forumming/index.php?topic=144972.msg367077#msg367077</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="http://picsrv.fora.pl/xeon/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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