Divergence with Genetic Exchange

Download or read book Divergence with Genetic Exchange written by Michael Lynn Arnold and published by Oxford University Press. This book was released on 2016 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the processes associated with evolutionary divergence and diversification. The focus, as the title indicates, is on the role played by the exchange of genes between divergent lineages. The study of genetic exchange resulting from natural hybridization, horizontal gene transfer, and viral recombination has long been marked by controversy between researchers holding different conceptual frameworks. Those subscribing to a doctrine of "species purity" have traditionally been reluctant to recognize inferences suggesting anything other than a marginal role for non-allopatric divergence leading to gene transfer between different lineages. However, an increasing number of evolutionary biologists now accept that there is a growing body of evidence indicating the existence of non-allopatric diversification across many lineages and all domains of biological diversity.