Table 1  The number of genes and retained genes in each of the three subgenomes in B. rapa when compared to A. thaliana
Subgenome ISubgenome IISubgenome IIIArabidopsis
Genome span (Mb)56.978.1104.6119.1
No. genes8,89011,95716,83827,134
Gene density (genes/Mb)156.3153.0160.9227.8
No. retained genes5,9667,67911,53616,423
Retained gene density (genes/Mb)104.998.3110.3137.8
% genes retained (compared to Arabidopsis)364670100
  • The “number of retained genes” in each subgenome is taken from Wang et al. (2011).