carolinensis was not more GC3-eroded than its squamate relatives, and even showed a slight trend toward increased GC3-heterogeneity in its terminal branch.
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Biased gene conversion and GC-content evolution in the coding sequences of reptiles and vertebrates.
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The sentences
We also correlated GC3 to GC-content at first (GC1) and second (GC2) positions of CDS, and again obtained highly significant correlation coefficients (GC3–GC1: r 2 = 0.50, GC3–GC2: r 2 = 0.26 for the green anole; GC3–GC1: r 2 = 0.54, GC3–GC2: r 2 = 0.33 for the chicken).