| Chihuahua (*n* = 34) | French Bulldog (*n* = 35) | Golden Retriever (*n* = 30) | Labrador Retriever (*n* = 32) | Miniature Dachshund (*n* = 33) | Shiba Dog (*n* = 31) | Toy Poodle (*n* = 34) |
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Number (%) | Number (%) | Number (%) | Number (%) | Number (%) | Number (%) | Number (%) |
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Genotype frequency |

AA | 3 (8.8) | 0 (0) | 2 (6.7) | 0 (0) | 1 (3.0) | 4 (12.9) | 0 (0) |

AG | 11 (32.3) | 4 (11.4) | 13 (43.3) | 4 (12.5) | 7 (21.2) | 14 (45.2) | 6 (17.6) |

GG | 20 (58.9) | 31 (88.6) | 15 (50.0) | 28 (87.5) | 25 (75.8) | 13 (41.9) | 28 (82.4) |

Allele frequency |

A | 0.250 | 0.057 | 0.283 | 0.062 | 0.136 | 0.355 | 0.088 |

G | 0.750 | 0.943 | 0.717 | 0.938 | 0.864 | 0.645 | 0.912 |