Sept_13 - MIDTERM NEXT TUESDAY Monday 4-6 pm UTC 3.134...

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MIDTERM NEXT TUESDAY Monday 4-6 pm UTC 3.134 review section calculators are OK but no necessary Sexual Selection going to south pacific → trip to New guinea lots of diverse animals birds of paradise closely related species that evolved from the crow shows different birds of paradise examples of result because of sexual selection Darwin asked: can natural selection explain the evolution of elaborate traits in males observations many sexually dimorphic traits do not improve survival often these traits are only expressed during breeding season often they are not expressed in females or immature individuals males: many variety of color while females are seem very dull and similar to each other sexual selection differential reproductive success caused by competition for mates mating process of mating now focused in the components of fitness usually a struggle among males for access to females why is it that males show the bright colors Why males: operational sex ratio: the relative numbers of males and females available to breed at a given moment more females than males → available for mating examples of sex-role reversal – females compete for males seahorses phalaropes
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This note was uploaded on 03/29/2012 for the course BIO 370 taught by Professor Edwards during the Spring '08 term at University of Texas.

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Sept_13 - MIDTERM NEXT TUESDAY Monday 4-6 pm UTC 3.134...

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