Mating into oz138 females with wild type males results in a maternal effect embryonic lethality, but no Emo phenotype. The oz138 Emo phenotype is therefore dependent on oz138 sperm. In oz197, abnormalities are seen in chromosomal morphology in distal oocytes which are not yet endomitotic. This suggests a primary defects in meiotic prophase progression in this mutant rather than a defect in ovulation. In summary, initial characterization suggests at least three phenotypic categories for mutants with the Emo phenotype.
Further characterization is in progress.
We thank Eric Lambie for isolating oz200.