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. Author manuscript; available in PMC: 2013 Jun 24.
Published in final edited form as: Science. 2012 Mar 30;335(6076):1634–1636. doi: 10.1126/science.1215330

Fig. 2.

Fig. 2

Genetic similarity matrix and dendrogram. The color scale represents the weighted mean genetic correlations within and between clusters. Negative genetic correlations indicate that the genes that cause areal expansion in anterior regions also cause relative areal contraction in posterior regions and vice versa (8).