Table 1 Suppression of the l(1)v231 lethal phenotype by different amounts of the X chromosome heterochromatin
X Chromosome Heterochromatic Free DuplicationsMale Progenyχ2P-valuer.m.v.%a
l(1)v231/Dp(1)*y+byw/Dp(1)*y+
Dp(1) 118753867720.21<0.0016.1
Dp(1) 120558044481139.07<0.00113.0
Dp(1) 134625517762975.62<0.00114.4
Dp(1) 117312872759535.54<0.00146.6
Dp(1) A14016692521173.25<0.00166.2
  • The results are of crosses of heterozygous l(1)v231/ywf females for males carrying the attached-XY chromosome, YsX.YL, In(1)EN yB, and the indicated heterochromatic free duplication of the X chromosome.

  • a The suppression effect is expressed as relative male viability (%) = Embedded Image.

  • b Dp(1)*y+ = X chromosome heterochromatic free duplications.