Figure 4 .

Distributions of P/A genes on chromosomes. The x-axis represents the physical distance (Mb) on the chromosome. The y-axis represents the proportion of P/A genes for each Mb of chromosomal length. The thick black bar represents the centromeric region.

Tan et al. BMC Evolutionary Biology 2012 12:86   doi:10.1186/1471-2148-12-86
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