// Definition
The discovery that cannabis terpene profiles are inherited as complete sets (cassettes) rather than individual terpenes segregating independently. When a terpinolene-dominant plant is selfed, 75% of offspring maintain the terpinolene profile while 25% show a recessive limonene profile, following Mendel's 3:1 dominant/recessive ratio.
// From the Episode
Ryan Lee discovered this through selfing Train Wreck (terpinolene-dominant). This means breeders can predict and fix terpene profiles across generations. The six primary terpene classes (pinene, limonene, beta-caryophyllene, myrcene, ocimene, terpinolene) cover 99% of cannabis varieties.