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Unformatted text preview: Fusion can be caused by environmental effects on a species mating choice and over time cross breeding leads to a uniform gene pool (reverse of speciation) 3. Hybrids are continually produced creating a stable hybrid zone. This stability can be the result of a narrow gene barrier. Meaning that though a hybrid might be less fit than the either of the two species, hybrids continue to arise because the number of members of the two species mating amongst themselves accounts for the loss of hybrid offspring. Another case shows that hybrid stability could be the result of mating zone location. Though a hybrid might be more fit than the parent species fusion is prevented because the area in which the parent species would meet to mate is hostile to both species....
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This note was uploaded on 01/25/2011 for the course BIO 1510 taught by Professor Unknown during the Spring '07 term at Georgia Institute of Technology.
- Spring '07