Figure 4.

(A) Genomic nucleotide sequence of the feline CRX gene, nucleotides 539-559 of the coding sequence, Rdy unaffected cat; (B) genomic sequence of homologous region in an Rdy-affected cat carrying one wild-type and one affected allele. Note the polymorphism (C/G) at the marked (*) position where the affected allele demonstrates a 1-bp deletion. Downstream of the deletion, the wild-type and affected alleles are 1 bp out of frame with one another, which can be clearly seen in the remaining sequence.