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.
Mutants show an elevated frequency of X chromosome nondisjunction in females. The distribution of crossovers is altered. Crossing over is reduced to approximately 50% of wild type. Mutants are not DNA repair defective as indicated by their lack of sensitivity to methyl methanesulfonate. The mutation is female specific; in hemizygous males there is normal segregation of the X and Y chromosomes.
