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Table 2 Breed, genotype, and allele frequencies by breed (American sample of dogs)

From: Characterization of a dopamine transporter polymorphism and behavior in Belgian Malinois

Breed n(% male) Genotype (% each breed) Allele frequency (% each breed)
1/1 1/2 2/2 1 2
Belgian Malinois       
 Belgian Malinois 144 (59) 61 (42) 60 (42) 23 (16) 182 (63) 106 (37)
Closely related breeds       
 Belgian Laekenois 4 (25) 2 (50) 1 (25) 1 (25) 5 (63) 3 (38)
 Belgian Sheepdog 16 (50)   8 (50) 8 (50) 8 (25) 24 (75)
 Belgian Tervuren 26 (50)   7 (27) 19 (73) 7 (13) 45 (87)
 Dutch Shepherd 2 (100)   2 (100)   2 (50) 2 (50)
Other breeds       
 Bearded Collie 6 (83)    6 (100)   12 (100)
 Border Collie 6 (33)   3 (50) 3 (50) 3 (25) 9 (75)
 Boxer 3 (67)    3 (100)   6 (100)
 Cocker Spaniel 1 (0)    1 (100)   2 (100)
 Collie 1 (0)    1 (100)   2 (100)
 English Mastiff 6 (67)    6 (100)   12 (100)
 German Shepherd 2 (0)    2 (100)   4 (100)
 Giant Schnauzer 11 (36)    11 (100)   22 (100)
 Great Dane 6 (33)    6 (100)   12 (100)
 Labrador Retreiver 2 (50)   1 (50) 1 (50) 1 (25) 3 (75)
 Miniature Poodle 2 (50)    2 (100)   4 (100)
 Mixed Breed 6 (50)   1 (17) 5 (83) 1 (8) 11 (92)
 Pitbull 10 (50)    10 (100)   20 (100)
 Portuguese water dog 2 (50)    2 (100)   4 (100)
 Rhodesian Ridgeback 4 (75)    4 (100)   8 (100)
 Rottweiler 1(0)    1 (100)   2 (100)
 Silkie Terrier 3 (33)    3 (100)   6 (100)
 Soft Coated Wheaten Terrier 1 (100)   1 (100)   1 (50) 1 (50)
 Springer Spaniel 2 (50)    2 (100)   4 (100)
 Standard Poodle 11 (55)   1 (9) 10 (91) 1 (5) 21 (95)
 Toy Poodle 2 (50)    2 (100)   4 (100)
Total 280 (54) 63 (23) 85 (30) 132 (47) 211 (38) 349 (62)