"By early L3, intense expression of
lag-2::GFP is restricted to the DTCs in wild-type hermaphrodites; in addition, faint expression is detectable in the remaining somatic gonadal precursor cells (Figs. 4E and 4F). In L2 or later
sys-1(
q544) mutant hermaphrodites, the intense expression typical of DTCs was not observed (Figs. 4G, 4H, and 5) (n = 80). For the weaker allele,
sys-1(
q7), a fraction of animals showed intense
lag-2 expression in distally located cells during L2, as well as later, consistent with the partially penetrant arm extension observed with this allele (Fig. 5)."