From: Allelic frequency of 12-FGF4RG and the association between the genotype with number of calcified intervertebral discs visible on radiographs in Coton de Tuléar and French Bulldog breeds
12-FGF4RG Genotype
All dogs
Females
Males
Homozygous
61 (13%)
32 (52%)
29 (48%)
Heterozygous
199 (43%)
112 (56%)
87 (44%)
Wild-type
205 (44%)
112 (55%)
93 (45%)
Total
465 (100%)
256 (55%)
209 (45%)