93E-93F;94C-94D
93E-93F;94C-94D
bk2 << pnt
One copy of Df(3R)5C1 is unable to suppress position effect variegation (PEV) at the w locus caused by In(1)wm4.
One copy of Df(3R)5C1 moderately suppresses the telomeric position effect (TPE) in stocks carrying a variegating P{hsp26-pt-T}39C-5 insertion at the telomere of the left arm of chromosome two.
Embryos homozygous for Df(3R)5C1 contain numerous unclustered apoptotic cells (assayed using acridine orange staining), in contrast to wild-type embryos where the apoptotic cells are seen to cluster together due to their engulfment by hemocytes.
S. Granderath.
The Df(3R)5C1 chromosome may act as a dominant suppressor of telomeric silencing (assayed using the effect of the chromosome on the eye colour phenotype of flies carrying "P{wvar}KR3-2", a stable "brown-red" variant of the P{3'WP-2,wvar}2Lt insertion), but the eye colour phenotype in the presence of Df(3R)5C1 overlaps the eye colour phenotype in a wild-type background so it cannot be unequivocally demonstrated that the deficiency chromosome uncovers a suppressor of telomeric silencing. In addition, any suppression is a false positive result (the suppressor is not within the bounds of the deficient region) because the region of the deficiency is covered by one or more nonsuppressing deficiencies.
All limits from polytene analysis (FBrf0091283)