GEvo syntenic analysis between one regions of Arabidopsis thaliana (bottom panel) and three orthologous regions from Brassica rapa. Since the divergence of these lineages, B. rapa has had a whole genomic triplication. Each panel represents a genomic region. Dashed line separates the top and bottom strands of DNA. Gene models are drawn above and below the dash line if the genes are located on the top or bottom strand of DNA respectively. Colors of gene models represents protein coding sequence (green), mRNA (blue), and gene (gray). The protein coding sequences of these regions were compared using blastz, and regions of sequence similarity are shown by colored blocks for each pair-wise comparison. Transparent wedges have been drawn connecting regions of sequence similar in order to identify synteny through a collinear arrangement of genes. Note that the genomic region from A. thaliana contains nearly the entire gene content of all the B. rapa regions combined, while the B. rapa regions share a subset of genes with one another. This is due to gene loss following the triplication of the B. rapa genome through a process known as
fractionation. Results can be regenerated at:
http://genomevolution.org/r/2cqg.