Adaptive evolution of the symbiotic gene NORK is not correlated with shifts of rhizobial specificity in the genus Medicago.

BMC Evol Biol · 2007 · PMC2247475 · PMID 17986323

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highly significantno p-value reported

Overall we find that the evidence for positive selection is not as strong but still highly significant [see Additional file 2 ].

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