microspectrophotometric analysis of macronuclear dna content ( n ) coupled with the cytoplasmic dry mass ( c ) values suggest that specific n to c ratios ( n/c ) are required for the initiation of dna replication and fission : during a normal ( exponential growth ) cell cycle , both n and c double , but asynchronously , so that the n/c of both post-fission-daughter cells and pre-fission cells is identical ( standardized to n/c = 1 ) but late g1 cells have a low n/c .
C0010834
cytoplasmic
C0007634
cells