TABLE 8

Repression of P excisions from snw by lines homozygous for TP5 snw X chromosomes extracted from mutant aubergine and piwi stocks

Original mutationLineaNo. of vialsNo. of fliesExcision rate ± SEb
piwi11299730.017 ± 0.005
2288550.032 ± 0.015
3288950.080 ± 0.028
4268140.052 ± 0.009
5299260.008 ± 0.005
6289400.172 ± 0.028
7226580.012 ± 0.007
8278390.009 ± 0.004
aubΔP-3a1268130.029 ± 0.012
2309390.056 ± 0.013
3257610.030 ± 0.013
42910090.020 ± 0.011
5257260.444 ± 0.050
6298750.019 ± 0.008
7258070.022 ± 0.010
8259060.004 ± 0.003
aubQC421309300.047 ± 0.011
2225110.011 ± 0.006
3247660.049 ± 0.016
4248430.075 ± 0.015
5278780.020 ± 0.008
6268320.059 ± 0.017
7288240.023 ± 0.010
8254460.042 ± 0.019
  • a The lines were obtained by crossing individual males from each mutant stock to attached-X females. A single TP5 snw; Cy Roi/+ son from each cross was backcrossed to attached-X females to purge the line of the aub or piwi mutation. TP5 snw; +/+ sons from these backcrosses were then double mated, first to attached-X females and then to FM7/sc7 l females. From the latter mating, TP5 snw/FM7 daughters were selected and crossed to TP5 snw sons from the former mating to obtain homozygous TP5 snw daughters and hemizygous TP5 snw sons, which were then intercrossed to establish a line. Granddaughters of these intercrosses were used to initiate the tests reported here. The tested males were TP5 snw; H(hsp/CP)2/+.

  • b Average unweighted excision rate [(sn+ + sne)/(snw + sn+ + sne)] ± standard error.