Precise deletion of the Rif1 open reading frame. A Disc\RFPDsRed.3xP3.cUa marker has been inserted in place of the deleted sequence.
Rif1KO homozygous mutants develop to adulthood with a reduced survival rate and a reduced male-to-female ratio. Embryos laid by Rif1KO/Rif1KO mothers have a reduced hatch rate as well as cell cycle defects; including a shorter mitotic S phase 13, a significantly shorter S phase 14, resembling earlier S phases, and occasional early entry into (an additional) mitosis 14, which completes, but with substantial nuclear fall in.
Rif1KO has some die during embryonic stage | maternal effect phenotype, enhanceable | maternal effect by Cdc7GL00585/Scer\GAL4VP16.mat.αTub67C
Rif1KO/Rif1KO is a suppressor | maternal effect | partially of majority die during embryonic stage | maternal effect phenotype of Cdc7GL00585, Scer\GAL4VP16.mat.αTub67C
Rif1KO/Rif1KO is a suppressor | maternal effect | partially of abnormal mitotic cell cycle | maternal effect | embryonic stage phenotype of Cdc7GL00585, Scer\GAL4VP16.mat.αTub67C
Rif1KO/Rif1KO is a suppressor | maternal effect | partially of nucleus | maternal effect | embryonic stage phenotype of Cdc7GL00585, Scer\GAL4VP16.mat.αTub67C
Rif1KO homozygosity, but not heterozygosity in mothers expressing Cdc7GL00585 under the control of Scer\GAL4VP16.mat.αTub67C restores cell cycle progression, with most embryos reaching the blastoderm stage; nuclear abnormalities still occur, but some embryos (a minority) survive and hatch.