Imprecise excision of the P{EPgy2}DNApol-ηEY07711 progenitor insertion, resulting in a 1309bp deletion which removes part of the 5'UTR and exons encoding residues 1-436 of DNApol-η.
Inferred boundaries of 1309 bp deletion resulting from the imprecise excsion of P{EPgy2}PolHEY07711. The deletion is reported to remove part of the 5' UTR and residues 1-436 of PolH.
fertile (with Df(3L)BSC284)
viable (with Df(3L)BSC284)
Homozygous DNApol-ηExc2.15 and DNApol-ηExc2.15/Df(3L)BSC284 females are viable and fertile, producing embryos with normal hatching rates.
Embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females are significantly more sensitive to exposure to UV irradiation compared to controls. The mutant embryos show a significant increase in mitotic index upon exposure to UV irradiation (this increase is not seen in wild-type controls).
Approximately 20% of embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females have a majority of abnormal (nopo mutant-like) mitotic spindles during syncytial embryogenesis. The frequency of syncytial embryos with a majority of abnormal spindles increases to approximately 90% after exposure to irradiation in the mutant embryos (compared to only 24% in UV-irradiated wild-type controls).
Homozygous larvae are sensitive to treatment with hydroxyurea.
PolHExc2.15 has mitotic spindle | maternal effect phenotype, suppressible | maternal effect by lokp6/lokp6
The mild abnormal spindle phenotype seen in syncytial embryos derived from homozygous DNApol-ηExc2.15 females in the absence of UV irradiation is suppressed if the females are also homozygous for lokp6. In addition, the spindle abnormalities seen after irradiation in embryos derived from homozygous DNApol-ηExc2.15 females are also suppressed in embryos derived from double mutant females.
PolHExc2.15 is rescued by Scer\GAL4VP16.nanos.UTR/PolHUASp.Tag:HA
Expression of DNApol-ηScer\UAS.P\T.T:Ivir\HA1 under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 suppresses the increased sensitivity to UV irradiation and abnormal spindle phenotype seen in embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females.