C. ELEGANS
WHOLE-ORGANISM REFERENCE · L1–L7 · 302 NEURONS · FULL CONNECTOME
100 Mb · 20,000 genes · 959 somatic cells · 302 neurons
100% cell lineage mapped · Full connectome (White et al. 1986) · OpenWorm
γ₁ = 14.134725141734693 — runs through every synaptic activation threshold
GENOME · L1 LAYER
C. elegans N2: 100 Mb across 6 chromosomes · ~20,000 protein-coding genes · only ~25% coding (vs 88% in E. coli) · the rest = regulatory infrastructure · First animal genome fully sequenced (1998) · WormBase: authoritative database
| ELEMENT | COUNT | NOTES |
|---|
| Chromosomes | 6 | 5 autosomes + X (hermaphrodite: 2X; male: 1X) |
| Protein genes | ~20,000 | Similar to humans (21,000) |
| Coding fraction | ~25% | 75% non-coding = regulatory complexity |
| miRNA genes | ~150 | First miRNA ever discovered: lin-4 (1993) |
| Operons | ~1,000 | Polycistronic mRNAs (unusual for eukaryote) |
ANATOMY · L5 LAYER · 100% MAPPED
959 somatic cells (hermaphrodite). 1,031 (male). Every single cell lineage traced from zygote to adult by Sulston & Horvitz (1977-1983). Nobel Prize 2002. This is the only multicellular organism where we know the complete birth history of every cell. WormAtlas: complete anatomical database
TISSUES
Pharynx: 95 cells (pumping)
Gonad: 143 cells (reproduction)
Intestine: 20 cells (digestion)
Muscle: 81 cells (movement)
Hypodermis: 72 cells (outer layer)
CELL FATE
131 cells die by apoptosis
ced-3, ced-4 (apoptosis genes)
Nobel 2002: Brenner, Sulston, Horvitz
Apoptosis conserved to humans
Fleet: controlled node retirement
MORPHOLOGY
~1 mm long · transparent
Body plan: tube-in-tube
Sinusoidal movement
Pharynx pumping: ~250/min
Generation time: 3.5 days at 20°C
NERVOUS SYSTEM · L4-L5 LAYERS · FULL CONNECTOME
302 neurons · ~7,000 chemical synapses + gap junctions · Full wiring diagram published 1986 (White, Southgate, Thomson, Brenner) · 7 neurotransmitters: acetylcholine, GABA, glutamate, dopamine, serotonin, octopamine, tyramine · OpenWorm: complete simulation project
NEURON CLASSES
Sensory neurons: 60 (detect environment)
Motor neurons: 50 (control muscles)
Interneurons: 25 (integrate signals)
+ polymodal neurons (multiple functions)
Every neuron: named, typed, wired
CONNECTOME DATA
~2,200 synaptic connections
~900 gap junctions (electrical)
Mapped by electron microscopy
OpenWorm: Python simulation live
Fleet: routing graph template
DEVELOPMENT · L5-L6 LAYERS
LIFE STAGES
| STAGE | DURATION | KEY EVENTS |
|---|
| Embryo | ~14 hours | Fertilization → 558 cells → hatch |
| L1 larva | ~12 hours | Pharynx active; feeds; +302 cells |
| L2 larva | ~8 hours | Gonad development begins |
| L3 larva | ~8 hours | Vulva development |
| L4 larva | ~8 hours | Final cell divisions; sperm formed |
| Adult | ~20 days | Egg laying begins; ~300 self-progeny |
| Dauer larva | Months | Starvation response; SET-H dormant mode |
BEHAVIORS · L6 LAYER
CHEMOTAXIS
ASE neurons sense Na, Cl, amino acids
AWA/AWC: volatile odorants
ASH: nociception (repellents)
Directed movement to food
THERMOTAXIS
AFD neurons: 0.01°C resolution
Memory of cultivation temperature
Moves to "remembered" temp
Classical conditioning analog
LEARNING
Associative learning: odor + starvation
Non-associative: habituation
302 neurons sufficient for memory
Fleet: PEMCLAU update signal
HODGKIN-HUXLEY MODEL · 302 COUPLED EQUATIONS
C dV/dt = -g_Na · m³h(V-E_Na) - g_K · n⁴(V-E_K) - g_L(V-E_L) + I
C: membrane capacitance (1 μF/cm²)
g_Na, g_K, g_L: conductances · m, h, n: gating variables
E_Na, E_K, E_L: reversal potentials · I: input current
302 coupled equations = the C. elegans nervous system
OpenWorm implements all 302 simultaneously
SORRY — FULL SIMULATION INCOMPLETE: Working brain model not complete. Structural connectome is fully mapped (White 1986). Synaptic weights (conductances) are not all measured. Sorry is in the synaptic weights, not the graph topology. OpenWorm runs the graph; the weights remain partially estimated. γ₁ = 14.134725141734693 appears as the firing threshold V_threshold = E_rest + γ₁ mV scaling.
OFRAME COMPLETENESS · L1–L7
FLEET CONNECTION · EOSE LABS
302 neurons = 18 MSI01 crew + fleet mesh. The C. elegans nervous system achieves chemotaxis, thermotaxis, associative learning, mating behavior, and dauer entry with just 302 neurons. The EOSE fleet achieves intelligent routing, memory, adaptation, and dormancy with MSI01 crew + mesh nodes. Same architecture, different substrate.
Connectome = routing graph. The wiring diagram of C. elegans is the routing table of the fleet. Each neuron connection = an API relationship. PEMCLAU is the interneuron layer: integrates signals, routes decisions.
Dauer = fleet dormancy / tardigrade mode. When resources are scarce, C. elegans enters dauer: mouth seals, metabolism drops 70%, lifespan extends 5-8x. Fleet tardigrade mode: reduce API calls, archive state, extend operational life.
Learning = PEMCLAU updating. C. elegans updates synaptic weights through experience. PEMCLAU updates vector embeddings through ingestion. Same principle: prior experience changes future response strength.