GENE MUTATIONS 



which had wings in which the costal margin 

 flared forward distally. Flare overlaps with 

 wild-type so that classification is uncertain. 

 Flare females produce among their offspring 

 some which are phenotypica.lly normal. Both 

 sexes are fertile and of normal viability. 

 (Discarded) 



INDENTED, in (wings). In December, 1931, an 

 orange defective female. X-rayed (dosage about 

 1500 R units) as a five-day larva, was subse- 

 quently mated to a wild-type male. An Fl fe- 

 male produced eighteen males of which five had 

 the primary wings somewhat indented toward the 

 tip. Indented frequently shows irregular thin- 

 ning of the radius veins beyond the stigma in 

 primaries and irregular narrov/ing of the secon- 

 daries. Viability is normal and females are 

 fertile. (Discarded) 



CUT, ct (wings). In February, 1931, six azy- 

 gous males with cut wings appeared in a frater- 

 nity. The outer margin of the wing is greatly 

 indented or straightened giving a cut appear- 

 ance (Fig. 6). The trait is very variable but 

 may be readily recognized. Viability and fer- 

 tility are normal. 



STRAP, sr (wings). In January, 1932, three males 

 with strap wings appeared in wild-type stock. 

 The first and third radius veins are greatly 

 shortened and the outer margin of the wing is, 

 therefore, given a lobed appearance. The trait 

 is very pronounced and of equal viability with 

 wild-type. (Discarded) 



45 



