Figure 1: Genomic structure and gene retention rates in syntenic regions of B. oleracea and B. rapa.
From: The Brassica oleracea genome reveals the asymmetrical evolution of polyploid genomes
(a) Segmental colinearity of the genomes of B. oleracea, B. rapa and A. thaliana. Syntenic blocks are defined and labelled from A to X (coloured) previously reported in A. thaliana20. (b) Time estimate of WGD and subsequent two Brassica species divergence. (c) Pattern of retention/loss of orthologous genes on each set of three subgenomic (LF, MF1 and MF2) blocks of B. oleracea and B. rapa corresponding to A. thaliana A to X blocks. The x axis denotes the physical position of each A. thaliana gene locus. The y axis denotes the proportion of orthologous genes retained in the B. oleracea and B. rapa subgenomic blocks around each A. thaliana gene, where 500 genes flanking each side of a certain gene locus were analysed, giving a total window size of 1,001 genes.
