Figure 4From: Evolutionary patterns of amino acid substitutions in 12 Drosophila genomesRadicality of amino acid substitutions in single copy and duplicated genes. A: mean absolute change of polarity between destination and source amino acids in gene families with different molecular function. B: mean exchangeability [21]. Colours as on Fig. 3. Insets: comparison of ambiguous and unambiguous substitutions.Back to article page