patRIL: paternal RIL number matRIL: maternal RIL number mtx1: replicate 1 fecundity mtx2: replicate 2 fecundity mtx3: replicate 3 fecundity SP: subpopulation 12 = paternal pA1 x maternal pB2, 21 = paternal pA2 x maternal pB1 chWeek: Week (block effect) Condo: rearing condo (connected set of drosophila vials 6 x 8)