F2.large (IMAGE) University of Wisconsin-Madison Caption The phylogeny of 1,154 yeasts and fungal outgroups built from 2,408 orthologous groups of genes. Branches are colored according to their taxonomic assignment to an order of Saccharomycotina (46). The innermost rings are colored by the top-level type of isolation environment in which each specific strain was isolated. The purple, yellow, and blue ring identifies the carbon growth classification for each strain. This classification is based on the carbon breadth, which, along with nitrogen breadth, is represented by the bar graph on the exterior of the tree. All of the traits illustrated (isolation environment, carbon growth class, nitrogen breadth, and carbon breadth) are widely distributed across the tree; no order has one trait exclusively. Credit University of Wisconsin–Madison Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.