The pattern of BrdU incorporation is similar to wild type in the brains of larvae expressing Hsap\MLL::Hsap\AFF1Scer\UAS.cMa
under the control of Scer\GAL4da.G32
. Analysis of BrdU labelling indicates that the cells proceed through prophase and metaphase at a similar rate to wild type but show a delay in the later steps of mitosis. Chromatin structure appears normal in brain squashes of these larvae.