Chromosomal locations of the mouse and human RNase III genes. Fluorescent in situ hybridization (FISH) analysis was performed according to published procedures [36, 37] by SeeDNA Biotech, Inc. (Windsor, Ontario, Canada). The mouse gene mapping result is shown in panel A, and the human gene mapping result shown in panel C. For the mouse gene mapping experiment, the probe was a mouse cDNA clone (Accession No. AA549506; ~1.2 kb insert). For the human gene mapping experiment, the probe was a human cDNA clone (Accession No. AA460045; 1.26 kb insert).