|Computed Breakpoints include|
|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|
Chromosome V-shaped in metaphase. An X chromosome in normal sequence with YL appended as a second arm. May carry varying amounts of the proximal part of YS between the X and the centromere.
|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|
Males carrying X.YL require KS in some form for fertility.
|Stocks ( 9 )|
|Notes on Origin|
A recurrent product of exchange between the proximal heterochromatin of C(1)RM and either arm of the Y Also may result from exchange between YS and the proximal heterochromatin of a normal X or the interstitial heterochromatin of C(1)RA. Have also been recovered as one element of T(1;Y)'s induced in X/Y sperm with one break in YS and the other in X heterochromatin (Kennison, 1981, Genetics 98: 529-48). May be recovered with YL marked with various euchromatic markers, e.g., bw+ (Erickson, 1968, D. I. S. 43: 63), y+, or BS.
|Balancer / Genotype Variants of the Aberration|
A series of X-ray-induced exchanges between X.YL and y+Y replacing YL with y+YL investigated by Frankel (1968, DIS 43: 99; 1973, Genetics 74: 115-32).
|Synonyms & Secondary IDs ( 3 )|
|Secondary FlyBase IDs|
|References ( 9 )|