Table 3.

Effects of trx and PcG mutations onwhite gene expression and on pairing-sensitive repression in ΔBC 4-kb transgenic lines

ConstructNo. of lines showing a change in gene expression/no. of lines tested
trxB11 Psc1 Pcl11 ScmD1 phob/phoc v Pairing-sensitive repressionb
ΔB6/9a NTNTNTNT5/7b
ΔBC10/117/106/105/10NT3/3
ΔBC24/54/77/70/7NT0/5
ΔBC34/60/50/50/5NT0/5
ΔBC3-PHO1 NTc 4/83/82/80/30/6
ΔBC3-PHO2NT7/106/105/103/45/8
ΔBC3-PHO1-2NT2/82/82/81/41/7
  • a Ratios in columnstrxB11 tophob/phocv represent the number of transgenic lines which showed either a decrease (in trxmutants) or an increase (in PcG mutants) in eye pigmentation in response to heterozygous mutant alleles to the total number of lines tested. For pho mutants, the effect was tested in thephob/phocv heteroallelic combination.

  • b Ratios in this column represent the number of lines with decreased white gene expression in homozygotes versus heterozygotes to the number of lines tested for pairing-sensitive repression.

  • c NT, not tested.