TABLE 6

Reciprocal-cross analysis of female fertility in the Sexi.4 genetic background

CrossaOrigin of TPGenotype (all Sexi.4)Experimental groupbNo. females testedNo. sterileProportion sterileNo. progeny per fertile female
LowMedianHighMeancSDd
AFather TP5 snw/FM6 Young6810.0222415340.67.2
Old8410.019436741.712.2
AFather TP5 snw/snw Young65500.771283.52.2
Old1061020.9611.531.81.0
BMother TP5 snw/snw Young6590.1414256.15.0
Old134800.601272.31.3
AFather TP6 snw/FM6 Young5800.002340.55840.37.4
Old10110.0111387240.012.1
AFather TP6 snw/snw Young53190.3614256.15.8
Old93750.811172.01.9
BMother TP6 snw/snw Young6140.071124013.79.4
Old11780.071134815.311.5
  • a See text for details.

  • b Females were collected from cultures on day 13. One group of females (young) was incubated with males 2–3 days and then assayed for fertility. Another group (old) was incubated with males 9–11 days and then assayed for fertility.

  • c Unweighted mean.

  • d Standard deviation.