In order to define more precisely the most proximal portion of chromosome 3R in Drosophila melanogaster, several new chromosome aberrations involving this region have been recovered and analyzed. These new arrangements were recovered as induced reversions of two dominant mutations, AntpNs and dszD, located in the region of interest. The results of the analysis have allowed the localization of s...

The region of the second chromosome of Drosophila melanogaster defined by DJ(2R)vgB was screened for recessive lethal and visible mutations. Fifty-eight new recessive alleles fall into 17 complementation groups. Many new vg alleles were also isolated in a screen for new ng deficiencies. The breakpoints of the new ug deficiencies were nonrandomly distributed. The distal breakpoints of twelve of ...

We describe a genetic analysis of the region 68C8-6YB5 defined by D[(3L)uin-7. We have induced 35 new lethal mutations in this region, which together with 20 existing lethal mutations, visible mutations, genes identified by protein products and one gene deduced from complementation data fall into 37 complementation groups in this %-band interval. Using existing and newly induced deficiencies we...

Genetic analysis of the B2t locus has resulted in the recovery of four recessive mutations in the BZt structural gene and a deficiency that deletes the locus. Two of the mutations were recovered as suppressors of B2tD, a dominant male sterile mutation at the locus, and two were induced on wild-type chromosomes. All four mutant genes encode &-tubulin subunits that are synthesized at normal rates...

A measurement of elastic deeply virtual Compton scattering γ∗p → γp using e−p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 145 pb−1. The cross section is measured as a function of the virtuality Q of the exchanged photon and the centre-of-mass energy W of the γ∗p system in the kinematic domain 6.5 < Q < 80...

Females homozygous for sans jille'62' (= fs(1)1621) have an abnormal germ line. Instead of producing eggs, the germ-line cells proliferate forming ovarian tumors or excessive numbers of nurse cells. The Sex-lethal gene product(s) regulate the branch point of the dosage compensation and sex determination pathways in the soma.The role of Sex-lethal in the germ line is not clear but the germ line ...

For over a hundred years, visible mutations in genes of the fruitfly Drosophila melanogaster have been used to track chromosomal regions and gain insight into basic principles of biology (Morgan, 1910). These so-called “marker” mutations, many coming from the very early years of fly genetics, remain an omnipresent and irreplaceable part of the toolkit used in daily fly pushing activities in mod...

Threeand four-jet production is measured in deep-inelastic ep scattering at low x and Q with the H1 detector using an integrated luminosity of 44.2 pb. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross ...