Origin of new evolutionary lineages
Origin of new evolutionary lineages
This chapter examines the effects of gene exchange on the formation of new evolutionary lineages. In some cases this can be viewed as the origin of new species, in others the organisms formed from genetic exchange are given subspecific classifications. In some instances, the genetic exchange event is seen to be the basal event for entire evolutionary assemblages. Regardless of the evolutionary timing of such events and the taxonomic identity of the products, the importance remains in the outcome: that is, novelty has been produced, both in terms of new organisms and new adaptations. The chapter presents examples from a wide range of microorganismic and multicellular lineages. It highlights cases of diversification that can be placed into the categories of polyploid, homoploid, ecological, and recombinational speciation.
Keywords: genetic exchange, new evolutionary lineages, natural hybridization, evolution, viral recombination
Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.
Please, subscribe or login to access full text content.
If you think you should have access to this title, please contact your librarian.
To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .
