Visualization of male anal depressor rearrangement using YFP:actin. (A,A′,E-I′) DIC (A,E,F,G,H,I) and fluorescent (A′,E′,F′,G′,H′,I′) images of the male tail. The arrows in the fluorescent images point to the ventral slit that denotes the anterior and posterior domains. (B) Diagram representing the transverse view of the hermaphrodite and larval male anal depressor (adp). The sarcomere orientation is indicated by the gray shading. There are two dorsal attachments, left and right. D, dorsal; R, right. (C-D′) DIC (C,D) and fluorescent (C′,D′) images of the hermaphrodite tail. (J) Diagram of the male anal depressor representing both the actin (red lines) and cell shape (in gray). The location of the nucleus is in yellow. For all images except B, dorsal is up and anterior is to the left. Scale bars: 10 µm.