October 07 - Consequence of species coming together other...

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Consequence of species coming together other than polyploidy, Species may come together, may hybridize, and produce sterile hybrids, some of which may go on to form new species. What usually happens when two species come together and hybridize? One possible outcome of hybridization is just the production of F1 hybrids (enviable or infertile, end of the line). Occasionally, we get a two species that are closely related and get a hybrid swarm , produce fertile hybrids and maybe get F2 or some backcrosses. When you go into these types of populations, you have the parental species (two original species), they are just local populations, one here, and one there. Another possible outcome is hybrid zone . Contact between toucan species in South America: species evolving in geographical isolation gradually spread and made contact along a long front. Instead of small population of new species, you have the two species blending with each other. The farther you go, the more influence of the species. Another species outcome that has nothing to do with hybridization: you have a couple of
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October 07 - Consequence of species coming together other...

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