DTFGENETICSDREAM THE FUTURE
Teaching
Healthy Cultivation

Visual lesson 08

Ethylene-mediated sexual plasticity

Separate chromosomal sex from phenotypic floral expression by tracing how ethylene signaling and interacting developmental or environmental factors can modify reproductive morphology, without implying that hormone response rewrites chromosome complement.
Sex, Pollen & SeedsChromosomal sex versus ethylene-responsive floral expression model
staminatepistillate
staminatepistillate

System study map

Ethylene-mediated sexual plasticity

Chromosomal sex versus ethylene-responsive floral expression modelStart 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
Chromosomal sex versus ethylene-responsive floral expression model
Study mode
Whole-plant context
Knowledge check

Can you explain what the visual is showing?

Practice

Why must the Atlas separate chromosomal sex from ethylene-mediated floral sex expression?

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.
Peer-reviewed research•Nature Communications•2026
An X-linked sex determination mechanism in cannabis and hop ↗

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.

System context

Connect this lesson to the whole plant

Staminate and pistillate development, XX/XY chromosome context, early sex-biased regulation, ethylene-mediated sexual plasticity, mixed-sex expression, anther maturation and dehiscence, pollen biology and fitness, pollination, fertilization, seed formation, and controlled crossing.
Open the full Sex, Pollen & Seeds interactive module
Previous lessonSex chromosomes & early gene regulationNext lessonAnther maturity, dehiscence & pollen release