Ancestral condition, Also provide evidence, n, Deuterostome alg complement, Rearranged chromosomes, Hemichordate chromosomes, Generate chromosome, Monophyletic group, Sea urchins, Deuterostome lineages, Lower densities, Different lineages, Transposable elements within, Genetic changes, Events may, Established via, div &gt;&lt; p, Specific chromosomal modifications, Delineate lineage, Orthologous genes distributed, Deuterostome common ancestor, Highly rearranged chromosomes, 3 pre, Mixing event produced, 2 chromosomes, Chromosomal architecture, Includes hemichordata, Developmental genes, Another chromosome, div >< p, Schizocardium californicum, Extant hemichordates, Ptychodera flava, Relatively short transition, Scale macrosynteny, algs )., Regulatory controls, Exhibit remarkable chromosome, Level genome assemblies, Various developmental processes, Deuterostome algs, Specific alg, Schizocardium californicum </, 2 Hemichordate species, n </, Assembled microsyntenic blocks, Likely due, Homologous alg, Deuterostome body plans, Subsequently split, Ptychodera flava </