Fig. 1.

lin-32 expression pattern. (A) Schematic of gene structure, showing removal of the bHLH domain from the lin-32 locus by the deletion allele tm1664 and reporter genes. (B) Representative images of lin-32 fosmid gene expression (otIs594) at embryonic stages when most terminal neurons are born. Dashed outlines indicate embryo shape. (C) lin-32 fosmid expression (otIs594) in the AB and MS lineages, which produce all but two of the 118 neuron classes of the hermaphrodite. The lin-32 fosmid reporter is first detected shortly after 100 min into development in ABalap descendants. Our analysis revealed that lin-32::gfp is expressed in both mitotically active neuroblasts during embryogenesis and a subset of postmitotic neurons. Scale bar: 10 µm.