Figure 4

(A) Evolution of the 11 yeast species recorded in the Yeast Gene Order Browser, as given by [29]. The * indicates partially sequenced organisms. At leaves, the top number is the number of chromosomes, contigs or scaffolds. The bottom number is the number of genes, as reported in [18]. On each branch, the label is the number of gene losses, which is directly inferred from the gene content at leaves. The simple circle is the root of the monophyletic group of non-duplicated species, referred in the text by σ. (B) The phylogenetic tree for Oryza sativa (rice), Brachypodium distachyon (brachypodium) and Sorghum bicolor (sorghum). At leaves, the top number is the number of chromosomes. The bottom number is the number of markers used in the study of cereal genomes.