A Database of Drosophila Genes & Genomes

FB2008_07, released August 8, 2008
 

Aberration Dmel\R(1)1

General Information
SymbolDmel\R(1)1SpeciesD. melanogaster
NameRing (1)FlyBase IDFBab0005890
Feature typering_chromosomeCreated / Updated2006-08-22/2006-08-22
Formalized genetic data
Sequence coordinates
Deleted segment
Duplicated segment
Computed Breakpoints include 1A;20B-20C
Breakpoints Inherited  
hide Nature of the Aberration
Cytological Order
| 1A - 20 . 20F - 20C |
 
Progenitor
C(1)RM
 
Mutagen
spontaneous
 
Class of aberration (relative to progenitor)
ring_chromosome
 
Breakpoints
Causes alleles
Carries alleles
y1
 
Transposon Insertions
Genetic mapping information
Comments
hide Comments on Cytology
All limits from polytene analysis (citation unavailable)
 
hide Molecularly Mapped Breakpoints
 
hide Sequence Crossreferences
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
hide Gene Deletion & Duplication Data
hide Genes Deleted / Disrupted
Complementation Data
Molecular Data
hide Genes NOT Deleted / Disrupted
Complementation Data
Molecular Data
hide Genes Duplicated
Complementation Data
Molecular Data
hide Genes NOT Duplicated
Complementation Data
Molecular Data
hide Related Comments
hide Phenotypic Data
In combination with other aberrations
NOT in combination with other aberrations
Male and homozygous female have reduced viability; X/0 male lethal (Schultz, 1941, Proc. Int. Congr. Genet., 7th., pp. 257-62). Somewhat unstable, tending to be eliminated during mitosis. Shows about 5 times as much somatic crossing over as rod X (Brown, Walen and Brosseau, 1962, Genetics 47: 1573-79). Crossing over reduced in ring/rod heterozygote; only double crossovers recovered. Exceptional males result from 4-strand double crossing over in R(1)1/+ female.
 
hide Position Effect Variegation Data
  
hide Stocks ( 2 )
Bloomington
707
R(1)1, y1/Dp(1;Y)y+/C(1)DX, y1 f1
4074
R(1)1, y1/C(1)DX, y1 f1/Dp(1;Y)y+
hide Notes on Origin
Discoverer
L. V. Morgan, 1922.
 
hide Balancer / Genotype Variants of the Aberration
    hide Separable Components
      hide Other Comments
      May open out into a rod [e.g., In(1)EN] spontaneously in stock.
       
      hide Synonyms & Secondary IDs ( 4 )
      Reported As
      Symbol Synonym
      R(1)1
       
      Xc
       
      XO
       
      Name Synonym
      Ring (1)
       
      Secondary FlyBase IDs
        hide References ( 7 )
        Research paper
        Brown et al., 1962, Genetics 47: 1573--1579
        Somatic crossing-over and elimination of ring X chromosomes. [FBrf0014617]
        Muller, 1956, D. I. S. 30: 140--141
        Another entire inversion formed by opening of a ring X. [FBrf0010708]
        Schultz and Catcheside, 1938, J. Genet. 35: 315--320
        The nature of closed X-chromosomes in Drosophila melanogaster. [FBrf0004315]
        Morgan, 1933, Genetics 18: 250--283
        A closed X chromosome in Drosophila melanogaster. [FBrf0002555]
        Morgan, 1926, Proc. Natl. Acad. Sci. USA 12(3): 180--181
        Correlation between shape and behavior of a chromosome. [FBrf0001510]
        FlyBase analysis
        FlyBase, 2007, En masse symbol-based assigment of Aberration Class with respect to wild type.
        En masse symbol-based assigment of Aberration Class with respect to wild type. [FBrf0191808]
        Book
        Lindsley and Zimm, 1992, The Genome of Drosophila melanogaster.
        The Genome of Drosophila melanogaster. [FBrf0066905]