 Wysłany: Sob 19:42, 05 Mar 2011 Temat postu: On the Makaloa Mat LondonJack Publishedaambhq |
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| have to assume that the short tail was
in itself genetically inheritedonly that it served as an indicator of some genetic inferiority. Anywayfor whatever reasonlet us suppose that f christian louboutin shop online ukemales in the ancestral bird of paradise species preferentially went for males with longer than average tails. Provided there was some genetic contribution to the natural variation in male tail-length this would in time cause the average tail-length of males in the population to increase. Females followed a simple rule: look all the males overand go for the one with the longest tail. Any female who departed from this rule was penalized even if tails had already Battle of the sexes 159 become so long that they actually encumbered males possessing them. This was because any female who did not produce long-tailed sons had little chance of one of her sons being regarded as attractive. Like a fashion in women's clothesor in American car designthe trend toward longer tails took off and gathered its own momentum. It was stopped only when tails became so grotesquely long that their manifest disadvantages started to outweigh the advantage of sexual attractiveness. This is a hard idea to swallowand it has attracted its sceptics ever since Darwin first proposeyilai: nike high heels http://www.4deserts.com/gobimarch/forum/viewtopic.php?p=6578#6578 |
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