Left limit from inclusion within Dp(1;3)in61j2 (FBrf0020397)
Right limit from complementation mapping against In(1)sc4Lsc8R (FBrf0013319)
cytosolic small ribosomal subunit (sensu Eukaryota)
| Symbol | bb |
| Class of gene | multicopy cytosolic ribosomal RNA gene cassette |
| Full name | bobbed |
| Cytogenetic map |
h26--h32 Left limit from inclusion within Dp(1;3)in61j2 (FBrf0020397) Right limit from complementation mapping against In(1)sc4Lsc8R (FBrf0013319) |
| Notes on cytogenetic map | Experimentally determined: 20F |
| Available reports | |
| Molecular map | Molecular map |
| Synonyms | NO; rDNA; rRNA; rDNA unit; rDNA repeat; flex; ITS1; clone 1.69; ribosomal RNA; Xbb; anon-EST:Liang-1.69; anon-EST:Posey92; l(1)20Fa; snRNA-a; small nuclear RNA a; female-specific lethal on X |
| GO:Cellular component |
cytosolic large ribosomal subunit (sensu Eukaryota) cytosolic small ribosomal subunit (sensu Eukaryota) |
| Recent reviews | Mackay, 1996, McKee, 1996 |
| Useful aneuploid aberrations | Deficiency: Df(1)17-87; Duplication: Dp(1;3)in61j2 |
| Discoverer | Sturtevant, Feb. 1920. |
| Duplicated in | Dp(1;3)BS3i |
| Comments on genetic locn. | Genetic distance between bb and f calculated to be 9.3cM. |
| Transposable el. data | R1-elements and R2-elements are rarely transferred between the; rRNA loci of the X and Y chromosomes (bb and Ybb respectively).; Retrotransposition of R1-elements occurs predominantly in the male; germline, while retrotransposition of R2-elements is more evenly; divided between the germlines of both sexes. The rate of elimination; of R1-elements and R2-elements from the Ybb array on the Y chromosome; is twice that of the rate of elimination from the bb array on the; X chromosome. Both the bb and Ybb loci contain recombinational; "hotspots" where R1-elements and R2-elements are lost at a rate; eight times faster than elements located outside of the hotspots.; Most R1-element and R2-element eliminations appear to occur by; large intrachromosomal events that involve multiple rDNA units. |
| Protein & Transcript |
| Symbol | Kind | Length | Protein Size |
|---|---|---|---|
| bb+R18S | Transcript | -- | -- |
| bb+R28S | Transcript | -- | -- |
| bb+R2S | Transcript | -- | -- |
| bb+R5.8S | Transcript | -- | -- |
| bb+R8.0 | Transcript | -- | -- |
| Related transgene constructs and insertions |
| Type | Related transgene constructs (has expression data?) |
|---|---|
| characterization construct | P{5'rib7.144} (NA), P{5'rib7.201} (NA), P{5'rib7.202} (NA), P{5'rib7.210} (NA), P{5'rib7.211} (NA), P{5'rib7.K+} (NA), P{rib10Δ3.1A-1} (NA), P{rib10Δ3.1A-2} (NA), P{rib10Δ3} (NA), P{rib10} (NA), P{rib12} (NA), P{rib6ΔH} (NA), P{rib7.42A} (NA), P{rib7.49A} (NA), P{rib7.7B} (NA), P{rib7.HJ+B} (NA), P{rib7.U+} (NA), P{rib7} (NA) |
| Type | Related insertions (has expression data?) |
|---|---|
| miscellaneous insertion | P{rib10Δ3.1A-1}1A-1 (NA), P{rib10Δ3.1A-2}1A-2 (NA) |
|
Abbreviated table - Best-studied 30 of 113 alleles. (see also Full table) |
| Symbol | Allele class | Phenotype includes | Mutagen | Stocks | Molec. info. |
|---|---|---|---|---|---|
| l | -- | lethal | spontaneous | 3 | yes |
| t13.2 | -- | wild-type | in vitro construct | genomic fragment | -- | yes |
| G1 | -- | wild-type | spontaneous | -- | -- |
| 1 | -- | (with bb20) visible | -- | 11 | -- |
| D | -- | visible | dominant | X ray | -- | -- |
| ds | -- | (with In(1)bbDf) lethal | female | spontaneous | -- | yes |
| G3 | -- | visible | recessive | spontaneous | 1 | -- |
| 11 | -- | visible | recessive | spontaneous | -- | -- |
| G4 | -- | visible | recessive | spontaneous | -- | -- |
| G5 | -- | lethal | recessive | spontaneous | -- | -- |
| 2 | -- | visible | recessive | -- | -- | yes |
| 20 | -- | lethal | recessive | spontaneous | -- | -- |
| 41 | -- | visible | recessive | spontaneous | -- | -- |
| 28l | -- | visible | recessive | spontaneous | -- | -- |
| G2 | -- | lethal | recessive | spontaneous | -- | -- |
| l2 | -- | lethal | recessive | spontaneous | -- | -- |
| Of | -- | visible | recessive | X ray | -- | -- |
| 4 | -- | visible | recessive | -- | -- | yes |
| 2m | -- | wild-type | magnification | -- | yes |
| 2r | -- | lethal | reduction | -- | yes |
| BG | -- | -- | spontaneous | 12 | -- |
| flex-4 | loss of function | lethal | female | recessive | γ ray | -- | -- |
| N | -- | visible | recessive | spontaneous | 1 | -- |
| Of-2 | -- | visible | recessive | X ray | -- | -- |
| P2 | -- | visible | recessive | ethyl methanesulfonate | -- | -- |
| second | -- | visible | recessive | spontaneous | -- | -- |
| 6 | -- | visible | recessive | -- | -- | yes |
| 7 | -- | visible | recessive | -- | -- | yes |
| 8 | -- | visible | recessive | -- | -- | yes |
| 210 | -- | -- | Δ2-3 | -- | yes |
| Summary of Allele Phenotypes |
| Phenotype manifest in | Allele |
|---|---|
| abdomen | bbG5 |
| abdominal segment, macrochaeta | bb41c13 |
| abdominal tergite | bbsecond |
| abdominal tergite, macrochaeta | bb11; bb1; bb20; bb21; bb22; bb28l; bb2; bb3; bb41; bb4; bb6; bb7; bb8; bbfirst; bbfourth; bbG1; bbG2; bbG5; bbl2; bbl; bbOf-2; bbOf; bbP2; bbT6 |
| abdominal tergite, macrochaeta, male genitalia | bbD |
| egg chamber, ovary | bbflex-2 |
| macrochaeta | bb41e19; bbds; bbG4 |
| male genitalia | bbamg |
| References |
(listed by author, ID, year) |
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