TABLE 3

Formula , genetic variance in ln(X + c)-transformed traits, by background and treament, and change in genetic variance of ln(X + c)-transformed traits within backgrounds, Formula

Background
Trait (units)TreatmentUnloadedLoadedPa
A. Total productivityUnmutagenized0.0 (—)0.0082 (0.021)
    [ln(worms)2]Mutagenized0.98 (0.38)0.94 (0.40)
Formula 1.00 (0.37)***0.93 (0.39)***0.88
B. Early productivityUnmutagenized0.043 (0.056)0.099 (0.067)
    [ln(worms)2]Mutagenized1.3 (0.52)1.3 (0.49)
Formula 1.34 (0.32)***1.21 (0.40)***0.87
C. Late productivityUnmutagenized0 (—)0.11 (0.059)
    [ln(worms)2]Mutagenized0.89 (0.34)0.50 (0.25)
Formula 0.89 (0.056)***0.39 (0.077)***0.31
D. Relative fitness,Unmutagenized0.016 (0.043)0.062 (0.052)
    ln(w)2Mutagenized1.4 (0.56)1.9 (0.72)
Formula 1.41 (0.45)***1.81 (0.68)***0.50
E. LongevityUnmutagenized0.0011 (0.0025)0.0020 (0.0031)
    [ln(days)2]Mutagenized0.018 (0.0090)0.0036 (0.0045)
Formula 0.017 (0.022)***0.0016 (0.026)0.07
  • a P values represent the difference in response on the two backgrounds and are calculated as P = 2a, where a is the proportion of bootstrap replicates out of 1000 in which the change in Formula was greater or less on the unloaded background than on the loaded background, whichever value is <0.5. This accounts for the two-tailed nature of the test.

  • ***Significant effect of mutagenesis within a background, P < 0.0006.