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FB2026_01
,
released March 12, 2026
Insertion of a complete gypsy element at coordinate +63.7.
Apparently a gypsy element originally inserted between -5.0 and -6.5 has excised, leaving a 0.5 kb remnant and resulting in reversion of the sc phenotype and a new gypsy has inserted at 63.7, about 4 kb upstream from the ac transcription unit, to produce the present ac phenotype. Level of ac transcript reduced. gypsy at kb +63.7 A gypsy insert in the ac region of the achaete-scute complex at +63.7; in addition there is a 0.5 kb insert in the pcl region at approximately -5.0 to -6.5, which shows sequence homology with the gypsy LTR.
Flies do not have a sc phenotype; the anterior orbital, anterior notopleural, humeral, postvertical, ocellar, presutural, anterior postalar, anterior supraalar, posterior postalar, scutellar and posterior supraalar bristles are present.
Low level of absence of dorsocentral bristles as well as microchaetae. Bristles normally removed by sc mutations not missing.
Associated with: y3B.
Derivative of sc3B, which originally displayed a sc1-like phenotype. The original phenotype is no longer present and a weak ac phenotype appears instead.
Molecular data suggests that the original sc3B chromosome had a complete gypsy inserted in the scute β region. Later this gypsy is excised, leaving behind its LTR. Another mutational event inserted a second gypsy in the ac region, explaining the present ac phenotype.