title: Dominant maternal interactions with Drosophila segmentation genes.
abstract: A systematic search for X chromosome loci showing a dominant maternal interaction with the segmentation genes Krüppel, hunchback, knirps and hairy was performed using deficiencies spanning 65% of the X chromosome. No interaction with the knirps gene was observed, but five regions of the X chromosome showed a maternal dominant interaction with the Krüppel gene. Two of these regions also show a maternal dominant interaction with either hunchback (region 10A7-10A8) or hairy (region 10E1-10F3). In all of these interactions dead embryos were observed which showed the same defects as embryos homozygous for the segmentation gene tested. These results suggest that a complex repartition of maternal products necessary for subsequent segmentation may occur in the Drosophila egg.
authors.affiliation: Centre de Génétique moléculaire, F-91190, Gif sur Yvette, France.
authors.forename: Hervé
authors.initials: H
authors.lastname: Tricoire
keywords: Dominant maternal effect; Drosophila; Segmentation genes; X-Chromosome Loci