Insertion of a P{PZ} element upstream and within 1.5kb of the P{PZ} element insertion in Klp61F07012.
aster & spermatocyte (with Klp61F07012)
centriole & spermatocyte
centrosome & spermatocyte (with Klp61F07012)
spindle & spermatocyte (with Klp61F07012)
Acentrosomal meiotic spermatocytes of Klp61F07012/Klp61F06345 transheterozygotes exhibit microtubules, but do not show microtubule asters or detectable spindle structures.
The fusome in Klp61F06345 testes appears to be fragmented.
The brains of homozygous and hemizygous larvae have a reduced frequency of anaphase figures, and an increased frequency of polyploid figures and overcondensed chromosomes compared to wild-type. The brains of Klp61F06345/Klp61Furc-4 larvae have a less severe mitotic phenotype. 28.4% of the mitotic spindles in homozygous larval brain cells are monopolar, 65.2% are bipolar but monastral (only one half-spindle appears to be organised by a centrosome with a focus of γ tubulin) and 6.4% are normal biastral bipolar spindles. 13.3% of the mitotic spindles in Klp61F06345/Klp61Furc-4 larval brain cells are monopolar, 25.8% are bipolar but monastral (only one half-spindle appears to be organised by a centrosome with a focus of γ tubulin) and 60.9% are normal biastral bipolar spindles. The brains and imaginal discs are small compared to wild-type in approximately 50% of homozygous and hemizygous larvae, and often similar to wild-type in size and morphology in Klp61F06345/Klp61Furc-4 larvae. Nearly all homozygous spermatocytes are equal in size and contain equivalent amounts of chromatin. The spermatocytes contain a variable number of centriole pairs, the most common being 0 (35% of spermatocytes), 2 (25% of spermatocytes) and 4 (24% of spermatocytes) centriole pairs, and 10% of spermatocytes contain an odd number of centriole pairs.
Homozygotes and hemizygotes die as late third instar larvae or early pupae. Neuroblasts isolated from third instar homozygous larvae show an increased mitotic index and complete lack of anaphase figures, indicating metaphase arrest. Chromosomes are hypercondensed compared to wild-type and highly polyploid cells are common.
Klp61F[+]/Klp61F06345 is an enhancer of visible phenotype of Hsap\MAPTGMR.Ex.PJ
Klp61Furc-1/Klp61F06345, ncd1/ncd9 has partially lethal phenotype
Klp61F07012/Klp61F06345, ncd1/ncd9 has viable phenotype
Klp61F06345, ncd9 has partially lethal phenotype
Klp61F06345 has spindle & neuroblast & larva phenotype, suppressible by ncd9
Klp61F[+]/Klp61F06345 is an enhancer of eye phenotype of Hsap\MAPTGMR.Ex.PJ
Klp61F06345, ncd1 has chromatin & spermatocyte phenotype
Klp61F06345 ncd9/Klp61Furc-1 ncd1 adults are recovered at 28% of the frequency expected for full viability. Klp61F06345 ncd9 double mutant adults are recovered at 46% of the frequency expected for full viability. Biastral spindles in Klp61F06345 ncd1 spermatocytes sometimes show multiple masses of γ-tubulin at spindle poles and an apparently polyploid complement of chromatin. More than 96% of spindles in Klp61F06345 ncd9 mutant brains are biastral.
One copy of Klp61F06345 enhances the rough eye phenotype seen in flies expressing Hsap\MAPTGMR.Ex.PJ.
A. Spradling.
Excision of the P{PZ} element is accompanied by reversion of lethality and the abnormal mitotic phenotype.
Complements: l(3)0264002640.
Klp61F alleles form the following phenotypic series, from the most to the least severe: Klp61Furc-1 > Klp61Furc-3 > Klp61F06836, Klp61F07012 > Klp61F06345 > Klp61Furc-4.