Fig. 6. cki-1 and cki-2 cooperate with lin-35 Rb in regulating G1 progression. (A) Quantitative measurements of DNA content in the intestinal nuclei (gray bars) of wild-type and mutant animals of indicated genotype. Body wall muscles (black bars) serve as 2n DNA standard. (B) Rescue of postembryonic cell divisions. The cell numbers in the P2-P10 and intestinal lineages were counted in strains of indicated genotype. Genes that do not carry allele designations were inhibited by RNAi. (C) Additional cell divisions in a wild-type background caused by inactivation of the indicated genes. The wild-type is defined as zero supernumerary divisions. In all three panels, bars indicate mean±s.e.m.