sentences:  One branch of evolution involving up to 100 viable genome rearrangements (translocations and inversions), a few million base pair changes, and a limited number of gene deletions, duplications and additions lead to modern with its 4718 protein-coding genes and 9.2 million base pairs (smallest genome of a free-living eukaryote yet characterized) spread over seven chromosomes.The genome of underwent a more eventful evolution, which includes a whole-genome duplication.Despite the long evolutionary history of the two organisms and fundamentally different ways of growth and development, the complete synteny map of both genomes reveals 95% of genes are orthologs of genes, and 90% map within blocks of synteny (syntenic homologs).