Lindsley & Grell, 1972, p. 35
discoverer: Bridges, 25k24.
phenotype: More extreme allele of bs. bs2/Df(2R)Px easily separable from +/Df(2R)Px, especially at or below 19oC. Wing effect caused by same mechanism as that of px [Waddington, 1940, J. Genet. 41: 75-139 (fig.)]. RK2.
color figure: P. A. Otto (original)
b & w figure: Edith M. Wallace, unpublished