ord << bk1 << bw << bk2

Associated with: Frd^HB132.

The Df(2R)bw-HB132 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{w^var}KR3-2", a stable "brown-red" variant of the P{3'WP-2,w^var}2Lt insertion), but the eye colour phenotype in the presence of Df(2R)bw-HB132 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 assumed to be a false positive result (the suppressor may not be within the bounds of the deficient region) because the 2L TAS array on the chromosome is reduced (as assayed by in situ hybridization) and it has previously been shown (FBrf0137248, FBrf0158986) that partial or complete deficiency of the 2L TAS array on the homologue suppresses silencing of brown-red variants of P{3'WP-2,w^var}2Lt.