Monogenetic Inheritance

Monogenetic inheritance refers to traits controlled by a single gene locus, where one dominant or recessive allele largely determines expression of a characteristic. In cannabis breeding, examples include certain cannabinoid synthase variants and some morphological traits like leaf shape or growth architecture. Unlike polygenic traits (controlled by many genes), monogenetic traits show clearer Mendelian segregation patterns in offspring, making them easier to predict across generations. Breeders studying monogenetic inheritance can identify and stabilize desired alleles more efficiently, though most commercially significant traits in cannabis involve multiple genes. Understanding single-gene inheritance remains foundational to modern cannabis genetics, even as research reveals the polygenic basis of yield, potency, and other complex phenotypes.

Monogenetic traits allow breeders to use straightforward test crosses and backcrossing strategies to fix alleles with minimal genetic background contamination. Tracking single-gene markers accelerates selection for pure-breeding lines and helps establish stable seed varieties.