7.3kb BamHI-PstI genomic fragment containing ord+.
wild-type
meiotic cell cycle
Restores normal chromosome segregation in ord1/ord3 flies.
Increasing the dosage of ord+ enhances the mei-S332 phenotype, resulting in increased nondisjunction in male meiosis. In mei-S3327 hemizygous females (but not for other mei-S332 alleles) nondisjunction is suppressed.
ord+t7.3 rescues ordunspecified