Fig. 2From: Co-linearity and divergence of the A subgenome of Brassica juncea compared with other Brassica species carrying different A subgenomesBlock arrangement and ancestral karyotypes in three A subgenomes of Brassica species. Comparison were made among the Ar subgenome in B. rapa, An in B. napus, and Aj in B. juncea. The constitution of the ancestral blocks in each subgenome is arranged correspondingly. The blocks in the brackets indicate blocks or small insertion that varied among different genetic maps for the speciesBack to article page