Aberration Dmel\R(1)2
| General Information | |||
|---|---|---|---|
| Symbol | Dmel\R(1)2 | Species | D. melanogaster |
| Name | FlyBase ID | FBab0005891 | |
| Feature type | ring_chromosome | Created / Updated | 2006-08-22/2006-08-22 |
| Formalized genetic data | |||
| Sequence coordinates | |||
| Deleted segment | |||
| Duplicated segment | |||
| Computed Breakpoints include | 1A3-1A4;19F1-20A1 | ||
| Breakpoints Inherited | |||
Nature of the Aberration
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| Cytological Order |
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| Progenitor | |||
| Mutagen | |||
| Class of aberration (relative to progenitor) | |||
| Breakpoints | |||
| Causes alleles | |||
| Carries alleles | |||
| Transposon Insertions | |||
| Genetic mapping information | |||
| Comments | |||
Comments on Cytology
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All limits from polytene analysis (citation unavailable) | |||
Molecularly Mapped Breakpoints
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Sequence Crossreferences
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| DDBJ
/
EMBL / GenBank | DNA sequence Protein sequence Name | ||
Gene Deletion & Duplication Data
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Genes Deleted / Disrupted
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| Complementation Data | |||
| Molecular Data | |||
Genes NOT Deleted / Disrupted
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| Complementation Data | |||
| Molecular Data | |||
Genes Duplicated
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| Complementation Data | |||
| Molecular Data | |||
Genes NOT Duplicated
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| Complementation Data | |||
| Molecular Data | |||
Related Comments
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Phenotypic Data
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| In combination with other aberrations | |||
| NOT in combination with other aberrations | More viable than R(1)1; X/0 male survives. Ordinarily, ring elimination less than 1% (Battacharya, 1950, Proc. R. Soc. Edinburgh, B 64: 199-215; Braver and Blount, 1950, Genetics 35: 98), but nearly 20% of the first progeny of 11-day-old females crossed to ring-bearing males are gynandromorphs (Hannah, 1955, Z. Indukt. Abstamm. Vererbungsl. 86: 600-21). Number of male nuclei in eggs of gynandromorphs varies greatly, suggesting that loss of the ring X may occur more than once and that it may take place as late as the ninth cleavage (Zalokar, 1980, Cell 19: 133-41). Crossing over reduced in ring/rod heterozygote; only double crossovers recovered. Exceptional males result from 4-strand double exchange in R(1)2/+ female. | ||
Position Effect Variegation Data
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Stocks
( 21 ) | |||
| Bloomington | |||
| Kyoto | |||
Notes on Origin
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| Discoverer | Beadle, 34b (ring nature discovered by Boche). | ||
Induced on: C(1)RM y+. | |||
Balancer / Genotype Variants of the Aberration
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Separable Components
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Other Comments
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Ring may open out spontaneously in stock [e.g., In(1)EN2]. R(1)2 chromosome from Bowling Green stock center found to carry an allele of bb, named bbBG. | |||
Synonyms & Secondary IDs
( 3 ) | |||
| Reported As | |||
| Symbol Synonym | R(1)2 Xc2 XC2 | ||
| Name Synonym | |||
| Secondary FlyBase IDs | |||
References
( 20 ) | |||
| Research paper |
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| Abstract |
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| FlyBase analysis |
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| Stock list |
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| Book |
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Nature of the Aberration