FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
The arrangement of microtubules in cp309unspecified mutants is not grossly perturbed, and anaphase cells usually have a normal arrangement of microtubules and chromosomes. Most prophase and metaphase mutant cells also have a normal arrangement of microtubules and chromosomes, although there is a modest increase in the number of cells that have at least one clearly disorganised spindle pole or that are more severely disorganised. Compared with controls, cp309unspecified mutant cells do not have a higher level of either polyploidy/aneuploidy during metaphase or lagging chromosomes during anaphase.