TABLE 5

Interaction of mod(mdg4)neo129 and mutations in other trx group genes in enhancement of PEV

GenotypeEnhancer effecta (R1)Paternal effectb (R2)
mod(mdg4)neo129/ ++ + (0.18)+ (0.40)
Df(3R)redtrx mod(mdg4)neo129/ ++ + + (0.05)+ + (0.11)
Df(3R)redtrx/+− (1.00)− (1.00)
E(var)3–401 / ++ + + (0.02)+ + (0.18)
E(var)3–401 mod(mdg4)neo129/ ++ + + (0.03)+ (0.45)
brm2/ ++ (0.40)ND
brm2 mod(mdg4)neo129/ ++ + (0.17)+ + (0.28)
brm2 Df(3R)redtrx/ ++ + (0.15)+ + (0.30)
vtd2/ ++ (0.62)ND
vtd2 mod(mdg4)neo129/ ++ + + (0.06)+ + (0.12)
  • The strength of the PEV enhancement and the paternal effect have been classified as strong (+ + + ; R < 0.10), intermediate (+ + ; R between 0.10 and 0.40), and weak (+; R between 0.40 and 0.75) alleles; R > 0.75 represents no significant effect.

  • a The enhancer effect is shown as the ratio (R1) of eye pigmentation level of offspring males containing the indicated combination of trx group alleles and the suppressor mutation Su(var)2–101 after crossing balanced trx group males to wm4; Cy/T(2;3)apXa Su(var)2–101/Sb females.

  • b The paternal enhancer effect represents the ratio (R2) of the E+ offspring males [wm4; Cy/apXa Su(var)2–101/TM3] resulting from crosses of wm4; Cy/T(2;3)apXa Su(var)2–101/Sb females to Wm4/Y; trx group/TM3 and Wm4/Y; Pr Dr/TM3 males (control), respectively.