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Sexual selection ( intrasexual – male to male competition)

Sexual selection ( intrasexual – male to male competition). Male Northern Elephant Seals fight fiercely each year. Unsuccessful males might not mate at all, while successful males have harems of 30 to 100 females. -wikipedia.com . Intersexual – “female choice”. Bower birds.

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Sexual selection ( intrasexual – male to male competition)

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  1. Sexual selection (intrasexual – male to male competition) Male Northern Elephant Seals fight fiercely each year. Unsuccessful males might not mate at all, while successful males have harems of 30 to 100 females. -wikipedia.com

  2. Intersexual – “female choice” Bower birds • http://www.youtube.com/watch?v=GPbWJPsBPdA

  3. Geographic isolation(Allopatric speciation) Finch diversity

  4. Reproductive isolation Prezygotic Postzygotic

  5. Sympatric Speciation

  6. Gradualism versus punctuated equilibrium

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