TABLE 5

ego-2 and alx-1 promote spermatogenesis

GenotypeTemperatureBrood sizeN
Wild-type (N2) hermaphrodite25°155 ± 1010
ego-2(om33) unc-75 hermaphrodite25°33 ± 510
ego-2(om33) unc-75 hermaphrodite × +/+ malea25°170 ± 712
ego-2(om33) unc-75 hermaphrodite × +/+ maleb25°119 ± 55
unc-75 hermaphrodite × +/+ maleb25°177 ± 147
unc-75; alx-1(0) hermaphrodite25°124 ± 811
ego-2(om33) unc-75; alx-1(0) hermaphrodite25°6 ± 110
ego-2(om33) unc-75; alx-1(0) hermaphrodite × +/+ maleb25°117 ± 610
ego-2(tm2272/om33) male × fog-1(ts) femalec,d25°<1 ± 125
+ male × fog-1(ts) femalec25°71 ± 410
  • N, total number of broods scored. Number following the “±” is the standard error of the mean. Broods were assayed on consecutive days, until at least 1 day after hermaphrodites had stopped producing embryos. At this point, visual examination revealed the presence of (apparently nonfunctional) sperm in ego-2(om33) unc-75 and ego-2 unc75; alx-1 hermaphrodites and in the mating partners of ego-2(tm2272/om33) males.

  • a Two males mated with each hermaphrodite.

  • b Three males mated with each hermaphrodite.

  • c Five males mated with each hermaphrodite. unc-75-marked hermaphrodites consistently fared better when mated with fewer males.

  • d Only four matings produced progeny (one to five per mother).