Figure 1
From: The expansion of amino-acid repeats is not associated to adaptive evolution in mammalian genes
Influence of GC content at 3rd codon position on AAR purity. GC3, GC at 3rd codon positions in the sequence context of the repeats. (A) positive correlation and regression line (using least squares) between GC3 and purity in orthologous mammalian exons; (B) Average GC3 in Impure and Pure AARs in orthologous mammalian exons (p < 2.16·10-16; Welch's t-test); (C) positive correlation between GC3 and purity in mammalian genomes and regression line (using least squares); (D) Average GC3 in Impure and Pure AARs in mammalian genomes (p < 2.16·10-16; Welch's t-test).