Cannabinoids are a subset of terpenophenolics that are unique to the species C. sativa. There are 70 known cannabinoids in C. Sativa (Flores-Sanchez and Verpoorte 2008), with the most abundant being Δ9 THC (Δ9 Tetrahydrocannabinol), CBD (Cannabidiol) and CBN (Cannabinol). Several of the genes controlling the biosynthesis of these compounds from a Cannabigerol precursor have been identified (Taura et al. 1996). The amount and type of cannabinoids produced is influenced by both genetic variation among C. sativa plants and the environment (de Meijer et al. 2003). Cannabinoids are at highest concentration in glandular trichomes of the plant, and therefore genes controlling trichome development will also influence the amount of cannabinoids a given plant produces.