Different Amounts of DNA in Newborn Cells of Preclude a Role for the Chromosome in Size Control According to the "Adder" Model.

According to the recently-revived adder model for cell size control, newborn cells of will grow and divide after having added a constant size or length, , irrespective of their size at birth. Assuming exponential elongation, this implies that large newborns will divide earlier than small ones. The molecular basis for the constant size increment is still unknown.