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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Codon usage is associated with the evolutionary age of genes in metazoan genomes

Figure 3

Age-dependent GC content and length of human, mouse, and fly genes. For each age group, the average GC content of the coding regions of the genes, or average protein length, is shown. See Figure 1 and Table 2 for the definition of the age groups used. For each of human, mouse, and fly, the variance between age groups for both GC content and protein length is statistically significant (permutation test, p < 10-6).

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