Cruzamento entre Petrogales provoca o repensar da evolução

quarta-feira, outubro 12, 2016

Gene flow despite complex Robertsonian fusions among rock-wallaby (Petrogale) species

Sally Potter, Craig Moritz, Mark D. B. Eldridge

Published 7 October 2015.DOI: 10.1098/rsbl.2015.0731

Source/Fonte: PhysOrg


Complex Robertsonian rearrangements, with shared arms in different fusions, are expected to prevent gene flow between hybrids through missegregation during meiosis. Here, we estimate gene flow between recently diverged and chromosomally diverse rock-wallabies (Petrogale) to test for this form of chromosomal speciation. Contrary to expectations, we observe relatively high admixture among species with complex fusions. Our results reinforce the need to consider alternative roles of chromosome change, together with genic divergence, in driving speciation.

FREE PDF GRATIS: Biology Letters