highly significantp < 10 − 10
Across multiple Glomeromycetes species, chi-square tests of double-base substitution bias gave highly significant P value (all p < 10 − 10 ), and TT>AA, TA>AT, and AT>TA repeatedly showed the strongest positive standardized residuals within the TT, TA, and AT categories, respectively ( Supplementary Tables S4 , available as supplementary material at Bioinformatics Advances online; Supplementary Methods , secti