|Name||Ring (1)||FlyBase ID||FBab0005890|
|Computed Breakpoints include||1A;20B-20C|
|Member of large scale dataset(s)|
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|Nature of the Aberration|
|Class of aberration (relative to progenitor)|
|Formalized genetic data|
|Genetic mapping information|
|Comments on Cytology|
All limits from polytene analysis (citation unavailable)
|Gene Deletion & Duplication Data|
|Genes Deleted / Disrupted|
|Genes NOT Deleted / Disrupted|
|Genes NOT Duplicated|
|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.
|Stocks ( 1 )|
|Notes on Origin|
L. V. Morgan, 1922.
|Balancer / Genotype Variants of the Aberration|
May open out into a rod <up>e.g., In(1)EN</up> spontaneously in stock.
|Synonyms & Secondary IDs ( 4 )|
|Secondary FlyBase IDs|
|References ( 7 )|