Figure 4From: Rapid evolution and copy number variation of primate RHOXF2, an X-linked homeobox gene involved in male reproduction and possibly brain functionPlot of pairwise Ka/Ks ratios in the primate species. There are 222 out of the 253 pairwise Ka/Ks ratios (87.7%) showing large values (>1). Ka/Ks ratios were estimated following Pamilo-Bianchi-Li's method [65, 66].Back to article page