title: Interaction systems between heterochromatin and euchromatin in Drosophila melanogaster.
abstract: The constitutive heterochromatin is still one of the major unsolved problems in genetics. In Drosophila melanogaster three genetic systems involving specific interactions between heterochromatic and euchromatic genetic elements are known: the Segregation Distortion, the crystal-Stellate and the abo-ABO systems. The genetic and molecular analysis of each system will allow the identification of all the components and the elucidation of the mechanisms underlying their interactions. The results of this analysis should provide insights into the biological significance of heterochromatin and into the evolutionary forces that result in the maintainance and stability of this enigmatic genetic material.
authors.affiliation: Istituto di Genetica, Università di Bari, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Palumbo
authors.forename: M
authors.initials: M
authors.lastname: Berloco
authors.forename: L
authors.initials: L
authors.lastname: Fanti
authors.forename: M P
authors.initials: MP
authors.lastname: Bozzetti
authors.forename: S
authors.initials: S
authors.lastname: Massari
authors.forename: R
authors.initials: R
authors.lastname: Caizzi
authors.forename: C
authors.initials: C
authors.lastname: Caggese
authors.forename: L
authors.initials: L
authors.lastname: Spinelli
authors.forename: S
authors.initials: S
authors.lastname: Pimpinelli
mesh_terms: D000818:Animals; D002843:Chromatin / Q000378:metabolism*; D004331:Drosophila melanogaster / Q000166:cytology*; D022041:Euchromatin; D006570:Heterochromatin / Q000378:metabolism*; D008957:Models, Genetic
chemical_list: D002843:Chromatin; D022041:Euchromatin; D006570:Heterochromatin