The process is ocurring by steps, starting with depolarization.
1- Na+ permeability > K+ permeability
2- Vm (membrane potential) approaches ENa+ (quilibrium potential for potassium)
3- K+ permeability > Na+ permeability
4- Vm (membrane potential) approaches EK+ (quilibrium potential for potassium)
Parental Phenotypes: Smooth Green × Smooth Green
Parental Genotypes: SsGg × SsGg
Parental Gametes: SG, sG, Sg, sg
Punnet Square: **In the figure**
11. Smooth/Green = 9
Wrinklen Green = 3
Smooth/Yellow = 3
Wrinkled Yellow = 1
Hope this helps!