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Title: Assessing substitution patterns, rates and homoplasy at HVRI of Steller sea lions, Eumetopias jubatus

Author: Phillips, C.D.; Trujillo, R.G.; Gelatt, T.S.; Smolen, M.J.; Matson, C.W.; Honeycutt, R.L.; Patton, J.C.; Bickham, J.W.;

Date: 2009

Source: Molecular Biology. 18: 3379-3393.

Publication Series: Scientific Journal (JRNL)

Description:

Despite the widely recognized incidence of homoplasy characterizing this region, the hypervariable region I (HVRI) of the mitochondrial control region is one of the most frequently used genetic markers for population genetic and phylogeographic studies. We present an evolutionary analysis of HVRI and cytochrome b sequences from a range-wide survey of 1031 Steller sea lions, Eumetopias jubatus, to quantify homoplasy and substitution rate at HVRI. Variation in HVRI was distributed across 41 variable sites in the 238-bp segment examined. All variants at HVR1 were found to be transitions. However, our analyses suggest that a minimum of 101 changes have actually occurred within HVRI with as many as 18 substitutions occurring at a single site.

Keywords: convergent molecular evolution, Eumetopias jubatus, homoplasy, HVRI, Steller sea lion, substitution rate

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Citation:


Phillips,C.D.; Trujillo, R.G.; Gelatt, T.S.; Smolen,M.J.; Matson,C.W.; Honeycutt, R.L.; Patton, J.C.; Bickham, J.W. 2009. Assessing substitution patterns, rates and homoplasy at HVRI of Steller sea lions, Eumetopias jubatus

 


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