... may be the most likely explanation, especiallyin organisms such as yeast and mammals, where there is astrong correlation between recombination and GC content[7].To date, most analyses of the ... (S.I.W, C.B.K.Yau, M. Looseley, and B. Meyers,unpublished data). The frequency of these newly definedoptimal codons (hereafter denoted Fop) is more strongly cor-related with the level of ... estimated using the frequency of optimal codons(Fop). The list of optimal codons for A. thaliana was revised(S.I.W, C.B.K.Yau, M. Looseley, and B. Meyers, unpublisheddata) by identifying the optimal...