A member of the left hand group of alleles shown to contain an insert of 6 kb, but to the right of f1, according to the orientation on the chromosome as determined by Parkhurst and Corces (1985) (McLachlan, 1986).
Denticles of all rows display normal arrangement and polarity but they are thin and sinuous ('goose-necked') compared with the stout hooks seen in wild type. The normally stout triangular hairs near the anterior margins of segments exhibit a similar phenotype. Longer hairs are close to normal but typically are not as straight, uniformly tapered and pointed as wild type.
Weak f phenotype, macrochaetae are slightly bent.
weak - macrochaetae slightly bent not suppressed by su(f) Slight allele of f. Ends of bristles twisted or split. RK2.
Bridges, 14th Nov. 1914.