Molecular epidemiological study of germline APC variant associated with hereditary gastrointestinal polyposis in dogs: current frequency in Jack Russell Terriers in Japan and breed distribution

Table 3 Ancestor dogs born in countries other than Japan

No	Case No	Numbers of ancestral dogs born in countries other than Japan in each generations (n)
No	Case No	Parents	Grandparents	Great-grandparents
1	JRT152	0	0	2^a (Australia n = 2)
2	JRT196	0	0	1 (Australia n = 1)
3	JRT203	0	0	1 (Australia n = 1)
4	JRT216	0	0	1 (Australia n = 1)
5	JRT221	0	0	2 (Australia n = 2)
6	JRT317	0	0	2 (Australia n = 2)
7	JRT342	0	0	2 (Australia n = 2)
8	JRT447	0	0	0
9	JRT671	0	0	2 (Australia n = 2)
10	JRT-P01	0	1 (Australia n = 1)	4 (Australia n = 3, Not specified^b n = 1)
11	JRT-P02	0	2 (Australia n = 1, New Zealand n = 1)	7 (Australia n = 1, New Zealand n = 2, Not specified^b n = 4)
12	JRT-P03	1 (Australia n = 1)	2 (Australia n = 2)	7 (Australia n = 5, Not specified^b n = 2)
13	JRT-P04	0	0	2 (Australia n = 2)
14	JRT-P05	0	1 (Australia n = 1)	4 (Australia n = 3, Not specified^b n = 1)

^aThe two dogs were common parents of two dogs in the grandparents’ generation: brother-sister mating were conducted in the grandparents’ generation
^bThe dogs were parents of dogs born in Australia or New Zealand despite the lack of specification of their national origin in pedigree certificates in the grandparents' generation

ISSN: 1746-6148