Lindsley & Grell, 1972, pp. 29-30
discoverer: Morgan, 10e.
references: Dexter, 1914, Am. Naturalist 48: 712-58 (fig.). Bridges and Morgan, 1923, Carnegie Inst. Wash. Publ. No. 327: 37, 152 (fig.). Morgan, Bridges, and Sturtevant, 1925, Bibliog. Genet. 2: 45.
phenotype: Wings reduced by marginal excision both anteriorly and posteriorly. Extremely variable and overlaps wild type. Expression and interaction studied by Goldschmidt and Gardner (1942, Univ. Calif. (Berkeley) Publ. Zool. 49: 103-24). Almost entirely suppressed by H. In combination with many different Minutes, causes incomplete development of anal and genital imaginal discs in males and less frequently in females (Goldschmidt, 1948, Proc. Natl. Acad. Sci. U.S. 34: 245-52; Sturtevant, 1949, Proc. Natl. Acad. Sci. U.S. 35: 311-13). Homozygous lethal. RK2 as lethal, RK3 as dominant.
other information: Bd/In(3R)C, 1(3)a was the first described case of a balanced lethal [Muller, 1918, Genetics 3: 422-99 (fig.)].
color figure: P. A. Otto (original)
b & w figure: Bridges and Morgan, 1923, Carnegie Inst. Wash. Publ. No. 327: 152 (original drawn by Edith M. Wallace)