Aberration Dmel\Df(2R)20B

General Information
Symbol	Dmel\Df(2R)20B	Species	D. melanogaster
Name		FlyBase ID	FBab0010164
Feature type	chromosomal_deletion

Computed Breakpoints include	42A10;42B1
Deleted segment	42A10--42B1
Sequence coordinates
Recent Updates
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FB2012_01
FB2011_10
All updates	Click here to see a list of all updates to this record from FB2010_08 and on.
Nature of the Aberration
Cytological Order
Progenitor
Mutagen
Class of aberration (relative to progenitor)	chromosomal_deletion (Bender, 1996, Bender et al., 1997, Kreber, 1994.3.17)
Breakpoints	42A7-42A10;42B1-42B2 (Kreber, 1994.3.17) 42A8-42A10;42B1 (Bender et al., 1997) 42A10-42A12;42B1 (Bender, 1996)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data	bk1 << EcR << l(2)42Bd << bk2
Genetic mapping information
Comments
Comments on Cytology
	Left limit of break 1 from polytene analysis (FBrf0091449) Right limit of break 1 from polytene analysis (FBrf0075275) Left limit of break 2 from polytene analysis (FBrf0075275) Right limit of break 2 from polytene analysis (FBrf0091449)
Sequence Crossreferences
DDBJ / EMBL / GenBank	DNA sequence Protein sequence Name
Gene Deletion & Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted	EcR (Bender, 1996) l(2)42Bb (Bender, 1996) l(2)42Bc (Bender, 1996) l(2)42Bd (Bender, 1996)
Molecular Data
Genes NOT Deleted / Disrupted
Complementation Data
	l(2)42Aa (Roote and Ashburner, 2005.6) l(2)42Ab (Roote and Ashburner, 2005.6) l(2)42Ac (Roote and Ashburner, 2005.6) Src42A (Lu and Li, 1999)
Molecular Data
Genes Duplicated
Complementation Data
Molecular Data
Genes NOT Duplicated
Complementation Data
Molecular Data
Related Comments

Phenotypic Data
In combination with other aberrations
NOT in combination with other aberrations
Stocks ( 1 )
Bloomington	8896 Df(2R)20B, cn¹ bw¹/SM6b, bw^*
Notes on Origin
Discoverer

Balancer / Genotype Variants of the Aberration

Separable Components

Other Comments

Synonyms & Secondary IDs ( 2 )
Reported As
Symbol Synonym	Df(2)20B (Tsai et al., 1999) Df(2R)20B
Name Synonym
Secondary FlyBase IDs

References ( 7 )
Research paper	Lu and Li, 1999, Dev. Biol. 208(1): 233--243 Drosophila Src42A is a negative regulator of RTK signaling. [FBrf0107862] Tsai et al., 1999, Molec. Cell 4(2): 175--186 SMRTER, a Drosophila nuclear receptor coregulator, reveals that EcR-mediated repression is critical for development. [FBrf0111507] Bender et al., 1997, Cell 91(6): 777--788 Drosophila ecdysone receptor mutations reveal functional differences among receptor isoforms. [FBrf0099891] Bender, 1996, D. I. S. 77: 143 New lethal loci in the 42AB region of the Drosophila melanogaster 2nd chromosome. [FBrf0091449]
Personal communication to FlyBase	Roote and Ashburner, 2005.6, l(2)43A mutations. l(2)43A mutations. [FBrf0188639] Kreber, 1994.3.17, Df(2R)nap chromosomes. Df(2R)nap chromosomes. [FBrf0075275]
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]