Theory 75/Timing & Gating/Developmental biology
Organ Size Is Set in a Window
The claim
Final organ size is set by the growth rate within a developmental window rather than by total growth time, so early perturbation cannot be compensated later.
01Mechanism
Growth is fastest and most sensitive to regulation during a window; after it, the organ reaches its set point and further time adds little.
02Prediction
Perturbations inside the window should matter more than later ones.
03Refutation
Compensation across the whole period would remove the window.