EVE100_310-334_2pp

EVE100_310-334_2pp - 2/22/10 1 310 310 The...

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Unformatted text preview: 2/22/10 1 310 310 The Dobzhansky-Muller model of species incompatibility The problem with single-locus models A1A1 Ancestral population 311 311 The Dobzhansky-Muller model of species incompatibility The problem with single-locus models A1A1 Ancestral population Split followed by allopatric divergence (pop 1) A1A1 A2A2 2/22/10 2 312 312 The Dobzhansky-Muller model of species incompatibility The problem with single-locus models A1A1 Ancestral population Split followed by allopatric divergence (pop 1) A1A1 A2A2 Hybridize to make F1 A1A2 Sterile or inviable F1 313 313 The Dobzhansky-Muller model of species incompatibility The problem with single-locus models A1A1 Ancestral population Split followed by allopatric divergence (pop 1) A1A1 A2A2 Hybridize to make F1 A1A2 Sterile or inviable F1 MAKES NO SENSE! 2/22/10 3 314 314 which leads to Dobzhansky-Muller model B1 allele not tested for proper functioning with A1, so hybrid may have reduced Ftness ut 16.6 315 315 Selection experiments support the idea that incompatibilities are an incidental effect of directional selection from Ridley See Rice and Hostert, Evolution 47:1637-1653 for many additional examples 2/22/10 4 316 316 Observations from natural populations also support the idea that isolation may be an incidental effect of directional selection maple willow maple Reproductive isolation among stickleback forms thought to be an incidental result of directional selection Fut. 16.8 A population of leaf beetle adapted to willow is isolated from populations adapted to maple Fut. 16.7 317 317 Observations from natural populations also support the idea that isolation may be an incidental effect of directional selection Adaptation to different pollinators results in reproductive isolation 2/22/10 5 318 318 Observations from natural populations also support the idea that isolation may result from directional selection from Ridley 319 319 Observations from natural populations also support the idea that isolation may result from directional selection...
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This note was uploaded on 03/29/2010 for the course EVE EVE 100 taught by Professor Davidbegun during the Winter '10 term at UC Davis.

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EVE100_310-334_2pp - 2/22/10 1 310 310 The...

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