Phased Cannabis sex chromosomes, X/Y evolution, and an X-linked ACS/ethylene-pathway mechanism associated with female inflorescence fate; supports chromosome-level context while avoiding one-gene explanations for all sex expression.
Visual lesson 07
Sex chromosomes & early gene regulation
Connect the common XX/XY chromosome system documented in dioecious hemp with sex-linked and sex-biased gene expression that can precede visible floral differentiation, while avoiding the claim that one gene alone determines every expression outcome.
System study map
Sex chromosomes & early gene regulation
XX/XY chromosome context to early sex-biased expression timelineStart with the highlighted plant system as the anatomical context. Then compare the lesson observations with the evidence sources and knowledge check below so structure, process, and whole-plant consequences stay connected.- Plant system
- Sex, Pollen & Seeds
- Lesson focus
- XX/XY chromosome context to early sex-biased expression timeline
- Study mode
- Whole-plant context
Knowledge check
PracticeCan you explain what the visual is showing?
What does current chromosome-level Cannabis evidence support about sex determination?
Track this lesson
Mark the lesson complete when you are comfortable with the visual, observations, and system context.
Evidence & further reading
Sources connected to this lesson
These references support specific biological, diagnostic, environmental, or process concepts used in this lesson. They are not a substitute for crop-specific testing or local regulatory guidance.Cannabis sex determination and sex-expression plasticity, genetic and hormonal regulation, environmental context, hermaphroditism, early detection, and breeding implications.
Female cannabis phytomer organization, solitary flowers, branching, photoperiod response, inflorescence architecture, and floral development.
Female cannabis photoperiod response, shoot-apex architecture, internode elongation, condensed inflorescence development, gibberellin, and auxin context.
System context