Lindsley & Grell, 1972, p. 227
discoverer: Clausen, 15l1.
references: Clausen and Collins, 1922, Genetics 7: 385-426. Bridges and Morgan, 1923, Carnegie Inst. Wash. Publ. No. 327: 149 (fig.).
phenotype: Homozygous or heterozygous Si combined with homozygous si-3 produces wings with turned up tips. Double homozygote has also a crimped costal vein. Other genotypes wild type. RK3.
color figure: P. A. Otto (original)
b & w figure: Morgan, Bridges and Sturtevant, 1925, The Genetics of Drosophila, Bibliog. Genet. 2: 1-262 (original drawn by Edith M. Wallace)