Figure 4.

Comparison of gene copy number between human and Arabidopsis. The gene copy number of each family (ML approach, BS ≥ 70) in human versus that in Arabidopsis was plotted. (a) Families with prokaryotic outgroups and early eukaryotic duplication. (b) Families with prokaryotic outgroups but no early eukaryotic duplication. (c) Families without prokaryotic outgroups but show early eukaryotic duplication. (d) Families without prokaryotic outgroups nor early eukaryotic duplication. The differences between Spearman correlation coefficients for both (a) versus (b) and (c) versus (d) are statistically significant (P-value < 0.01). The statistical significances were obtained through permutation test.

Zhou et al. Genome Biology 2010 11:R38   doi:10.1186/gb-2010-11-4-r38
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