Placenta-Specific Protein 1 Is Conserved throughout the Placentalia under Purifying Selection

<table>Pairwise dN/dS ratios among all 25 mammalian species in this study. Red represents 0.0 &lt; dN/dS &lt; 0.5. The pink entries represent 0.5 &lt; dN/dS &lt; 1.0; light blue represents 1.0 &lt; dN/dS &lt; 2.0; dark blue represents dN/dS &gt; 2.0. Species abbreviations are given in the text. Crown orders containing more than a single representative are grouped together.</table>

The Scientific World Journal

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Figure 3

Figure 3: Placenta-Specific Protein 1 Is Conserved throughout the Placentalia under Purifying Selection 