QTL mapping of parameters estimated for each RIL strain.

<p><b>A and B.</b> A least-squares method was used to fit individual k_o and S₀ values for all 94 RIL strains. <b>Left panel:</b> Histogram of all k_o and S₀ values from 94 RIL strains. <b>Middle panel:</b> QTL mapping of the k_o and S₀ parameters. The black line indicates a one-dimensional scan. We also used the <i>nurf-1</i> genotype as an additive (blue) or interactive (red) covariate. Black stars indicate QTLs with genome-wide significance above 0.05. <b>Right panel:</b> RIL strains segregated by their genotypes at the <i>nurf-1</i> locus (panel <b>A</b>) or their genotypes at the <i>nurf-1</i> and QTL_V loci (panel <b>B</b>). <b>C.</b> Schematic of NIL strains used for panel <b>D</b>. <b>D.</b> Total fecundity (number of eggs laid over the animal’s lifespan) of NIL strains and parental strains indicated on the x-axis.