Lindsley & Grell, 1972, pp. 75-76
origin: Spontaneous.
discoverer: Morgan, 18j16.
synonym: dp
references: Morgan, 1929, Carnegie Int. Wash. Publ. No. 399: 196.
phenotype: Wings reduced one-third, with oblique truncation; angle between veins L2 and L3 widened and intercrossvein distances shortened; marginal vein intact; two vortices with whorls of hairs in dorsocentral region; dorsocentral bristles medially displaced; vortex expression in most flies at 26oC; comma effect in anterior thorax also present in most flies at 26oC. At lower temperatures, wing effect persists but thorax appears normal. Body and leg size normal except at temperatures above 28oC, when they are somewhat reduced. RK1.
Alleles of dp produce three general phenotypes: oblique wings (o), vortices on thorax (v), and lethal (l). A specific allele may have one, two, or all of these phenotypes. For example: dpo (o) has oblique wings, but no vortices, and is not lethal; dpov (ov) has oblique wings and vortices, but is not lethal; and dpolv (olv) has all three attributes. The three recessive characteristics o, l, and v complement one another. Thus dpol/dpv, dpov/dpl, and dpo/dplv are phenotypically wild type; dpo/dpov, dpol/dpov, and dpo/dpolv are o; dpov/dpv, dplv/dpov, and dpv/dpolv are v; any two lethals are lethal in the trans heterozygote.
color figure: P. A. Otto (original)
b & w figure: Edith M. Wallace, unpublished
photograph: P. A. Otto (original)