Artificial selection provides a means of validating evolutionary principles, and is the basis of applied evolutionary biology. This chapter describes both short-term and long-term responses to selection for defined phenotypic characteristics. The first section of this chapter, Selection acting on quantitative variation, describes inheritance of quantitative characters; stabilizing selection; directional selection of quantitative characters; and stabilizing selection of quantitative characters. The second section is called Generations 1-10, the short-term response, and talks about a bristle experiment; the short-term response; asymmetry; divergence; selection of heritable merit; the indirect response to selection; the tertiary theorem of natural selection; and stabilizing selection. The next section called Generations 10-100, the limits to selection, discusses surpassing the ancestor; the selection limit; heroic experiments; the limits to selection in terms of loss of useful variation; long-continued response in terms of recurrent mutation; long-continued response in terms of environmental variance; limits to selection in terms of countervailing natural selection; the limits to stabilizing selection; and transcending the limit. Finally, the section entitled Generations 100 up - new kinds of creatures, discusses selection for yield in crop plants; historical improvement; and domestication.
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.
If you think you should have access to this title, please contact your librarian.