Lindsley & Grell, 1972, p. 268
discoverer: Huestis, 1923.
references: Morgan, Bridges, and Sturtevant, 1925, Bibliog. Genet. 2: 218.
phenotype: Eyes of male yellowish with orange tone; female eyes yellower, somewhat lighter than male. Larval Malpighian tubules colorless (Brehme and Demerec, 1942, Growth 6: 351-56). wa; bw slightly lighter than wa. wa; st light pinkish yellow (Mainx, 1938, Z. Induktive Abstammungs-Vererbungslehre 75: 256-76), as is wa v. z wa lighter than either mutant alone, only slightly darker than wbf; therefore, wa does not suppress z (Green, 1959, Heredity 13: 303-15). wa rb and wa g have nearly white eyes; wa wch, wbf wa, and wa su(f) all have white eyes. su(wa) wa and su(wa)G wa have browner eyes than wa. wBwx wa is like wa (Judd). wa/+ has lighter eyes than +/+ in v homozygote (Braver, 1953, DIS 27: 86). Darkened by P. The amount of pigment formed as a function of gene dose can be determined by use of duplications carrying wa and deficiencies: wa female < wa male = wa/wa female < wa/wa male ~ wa/wa/wa female (Muller, 1932, Proc. Intern. Congr. Genet., 6th. Vol. 1: 234). Eye color development autonomous in wa optic disks transplanted into wild-type hosts (Beadle and Ephrussi, 1936, Genetics 21: 230). RK1.
other information: Occupies middle site in the w pseudoallelic series; i.e., to the right of wbf and to the left of wch. Gives rise to partial revertants, as wr (Muller), waM (Mossige), and wa57i (Green). The white region of chromosomes carrying wa pairs and crosses over regularly with nonhomologous regions of the homologous chromosome; specific regions of nonhomologous involvement characterize different homologous chromosomes (Green, 1959, Genetics 44: 1243-56; Judd, 1961, Genetics 46: 1687-97). The products of nonhomologous exchange are deficiencies; e.g., Df(1)wrG, Df(1)wrJ1, Df(1)wrJ2, and Df(1)wrJ3, and duplications; e.g., Dp(1;1)wrG and Dp(1;1)wrJ2.
color figure: P. A. Otto (original)
photograph: P. A. Otto (original)