Botryococcus braunii is a eukaryotic organism, meaning it has linear DNA. The genome size of B. braunii depends on the race being examined. There are three races of Botryococcus: A, B, and L. They are classified based on the types of hydrocarbons they produce 1. Race A has a genome size of about 166.0±0.4 Mb (million bases), race B has about 166.2±2.2 Mb, and race L has a larger genome size than its brothers at about 211.3±1.7 Mb 13.