<i>In situ</i> hybridization of gonads.

<p>Panels on the left show the <i>uba-1</i> expression pattern in dissected gonads. Panels on the right show nuclear morphology by DAPI staining. From top to bottom, gonads are from adult hermaphrodites during oogenesis, adult males during spermatogenesis, <i>fem-1(hc17)</i> adult hermaphrodites that produce only oocytes, and <i>fem-3(q23)</i> adult hermaphrodites that make only sperm. At least 20 gonads were examined for each genotype or sex. DT, distal tip of gonad; P, pachytene region.