Before revision: Genetically identical cells exhibit large heterogeneity in their physical and functional characteristics even under constant homogenous environmental conditions.This heterogeneity proliferates among population members originating from a single mother due to stochasticity in intracellular biochemical processes and in the distribution of resources during divisions.
After revision: Genetically identical cells exhibit large heterogeneity in their physical and functional characteristics of cells (e.g. size, cycle time, growth rate, protein concentration) proliferates within an isogenic population due to stochasticity in intracellular biochemical processes and in the distribution of resources during divisions.