Cell cycle defects induced by dsRNA. (A) Examples of cell cycle profile phenotypes. Each panel shows the cell cycle profile for Drosophila S2R+ cells that have been treated with the indicated dsRNA. The location of cell populations with G1 and G2/M DNA content is labeled. Cell populations with >G2/M or subG1 DNA content are indicated in panels where there is a significant increase in these cell populations. The number of dsRNAs that displayed an increase of greater than 3 standard deviations from the mean is shown below each phenotype (# of hits). (B) dsRNA targeting cell cycle baits and their interactors cause strong cell cycle defects more frequently than dsRNA targeting other proteins. The percentage of cells in each cell cycle phase following treatment with individual dsRNAs was determined and the number of standard deviations that this value differs from the mean was plotted. Dot plots show data for dsRNAs targeting baits (red diamonds), interactors of the baits (blue squares), non-interactors (green triangles), and GFP (black circles). The red horizontal line in each panel is drawn at 3 standard deviations from the normalized mean of control dsRNA. The genes above the line were considered as hits, or potential cell cycle regulators.