TABLE 7

Effect of the Sexi.4 genetic background on female fertility assayed in snw/snx2 heterozygotes

CrossaOrigin of snwGenotypeNo. females testedNo. sterileProportion sterileNo. progeny per fertile female
LowMedianHighMeanbSDc
Without Sexi.4 chromosomes
AFather snw/+ 7520.0313467645.612.2
AFather snw/snx2 6910.013284628.38.9
BMother snw/snx2 11560.051173516.58.4
AFather TP5 snw/+ 6930.042487045.812.7
AFather TP5 snw/snx2 6210.023304828.511.7
BMother TP5 snw/snx2 7020.031203518.08.7
AFather TP6 snw/+ 7610.011458243.514.6
AFather TP6 snw/snx2 9050.065255225.211.4
BMother TP6 snw/snx2 13440.03115.54215.29.2
With Sexi.4 chromosomes
AFather snw/+ 130100.085386438.712.7
AFather snw/snx2 1131131.00
BMother snw/snx2 86861.00
AFather TP5 snw/+ 8430.044466645.410.4
AFather TP5 snw/snx2 91860.951121.20.4
BMother TP5 snw/snx2 86720.841262.41.6
AFather TP6 snw/+ 6930.047457444.513.3
AFather TP6 snw/snx2 71620.871241.91.1
BMother TP6 snw/snx2 56360.6413.5174.74.4
  • a See text for details. Females were collected from cultures on day 13, incubated with males 2–9 days, and then assayed for fertility. The data from females of different ages were similar and have been pooled.

  • b Unweighted mean.

  • c Standard deviation.