Three splice variants of the canine RD3 gene are aligned against sequence locations on canine chromosome 7 in the CanFam 2 assembly of the dog genome, and compared to the orthologous human and mouse transcripts. Canine Exon 4 is not present in the CanFam2 assembly, as indicated by the gap from 12,834,236 tp 12,832,685. Open boxes correspond to the canine RD3 open reading frames, black boxes correspond to untranslated cDNA. A -splice variant #1; B - splice variant #2; C - splice variant #3. Not to scale.