Aberration Dmel\Dp(1;f)856

General Information
Symbol	Dmel\Dp(1;f)856	Species	D. melanogaster
Name		FlyBase ID	FBab0003341
Feature type	free_duplication

Computed Breakpoints include	1D3-1D4;20A-h26
Duplicated segment	1Lt--1D3 (Observed cytology)
Sequence coordinates
Member of large scale dataset(s)
Recent Updates
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FB2013_03
FB2013_02
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	In(1)sc⁸
Mutagen	X ray
Class of aberration (relative to progenitor)	free_duplication
Breakpoints
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data	svr << bk1 << bk2 << bb
Genetic mapping information
Comments
Comments on Cytology
	Limits of break 1 from polytene analysis (citation unavailable) Left limit of break 2 from polytene analysis (citation unavailable) Right limit of break 2 from non-inclusion of bb (citation unavailable)
Sequence Crossreferences
DDBJ / EMBL / GenBank	DNA sequence Protein sequence Name
Gene Deletion & Duplication Data
Genes Deleted / Disrupted
Complementation Data
Molecular Data
Genes NOT Deleted / Disrupted
Complementation Data
Molecular Data
Genes Duplicated
Complementation Data
Completely duplicated	bb (Hawley et al., 1992) sc (Hawley et al., 1992) y (Hawley et al., 1992)
Molecular Data
Genes NOT Duplicated
Complementation Data
	dor (Hawley et al., 1992) su(w^a) (Hawley et al., 1992)
Molecular Data
Related Comments

Phenotypic Data
In combination with other aberrations
NOT in combination with other aberrations
Stocks ( 0 )

Notes on Origin
Discoverer	Krivshenko and Cooper, 1953.
	deletion of most of X euchromatin
Balancer / Genotype Variants of the Aberration

Separable Components

Other Comments
	Length at mitotic metaphase (relative to length of 4th chromosome): 3.0 Frequency (%) of Dp/Y segregation among female progeny: 66.4 +- 4.50 (significant at 0.1% level of risk) Frequency (%) of exceptional (XXY) females among the progeny: 3.5 (Portin and Rantanen, 1998.12.18) Induce high frequency of X and 4th chromosome nondisjunction. (Hawley et al., 1992)
Synonyms & Secondary IDs ( 1 )
Reported As
Symbol Synonym	Dp(1;f)856
Name Synonym
Secondary FlyBase IDs

References ( 8 )
Research paper	Hawley et al., 1992, Dev. Genet. 13(6): 440--467 There are two mechanisms of achiasmate segregation in Drosophila females, one of which requires heterochromatic homology. [FBrf0055832] Krider et al., 1979, Genetics 92: 879--889 The effect of ABO phenotypic expression on ribosomal DNA instabilities in Drosophila melanogaster. [FBrf0033212] Parry and Sandler, 1974, Genetics 77: 535--539 The genetic identification of a heterochromatic segment on the X chromosome of Drosophila melanogaster. [FBrf0026350] Grell, 1964, Genetics 50(1): 151--166 Chromosome size at distributive pairing in Drosophila melanogaster females. [FBrf0016201] Grell, 1964, Proc. Natl. Acad. Sci. U.S.A. 52(2): 226--232 Distributive pairing: The size-dependent mechanism for regular segregation of the fourth chromosomes in Drosophila melanogaster. [FBrf0016521]
Personal communication to FlyBase	Portin and Rantanen, 1998.12.18, Heterologous disjunction of the extra Y chromosome and minichromosomes in the female Drosophila melanogaster meiosis is roughly but not completely dependent on the (heterochromatic) length of the minichromosome. Heterologous disjunction of the extra Y chromosome and minichromosomes in the female Drosophila melanogaster meiosis is roughly but not completely dependent on the (heterochromatic) length of the minichromosome. [FBrf0106091]
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]