Duplicate gene evolution and expression in the wake of vertebrate allopolyploidization-0

Abstract

) Regression of Ka/Ks versus Ks in the early and later stages indicates that selection (relaxed purifying + positive) is not more common in the early stage of duplicate gene evolution (blue dots) than the later stage (red dots). The Y-intercept of these regression lines was set to zero and Ka/Ks ratios greater 2 (including undefined ratios) were given a value of 2. In (A) and (B), a dashed line indicates the neutral expectation. Fragments with Ka/Ks > 2 are, on average, half of the size of those with Ka/Ks < 2. Ka/Ks ratios above 2 may therefore be attributable in part to stochastic variance in Ks [43].<p><b>Copyright information:</b></p><p>Taken from "Duplicate gene evolution and expression in the wake of vertebrate allopolyploidization"</p><p>http://www.biomedcentral.com/1471-2148/8/43</p><p>BMC Evolutionary Biology 2008;8():43-43.</p><p>Published online 8 Feb 2008</p><p>PMCID:PMC2275784.</p><p></p

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