| Type | MGI:General | Description | over a 5-month period, homozygous matings produced only 10 litters and 66 pups (0.3 litter per 21-d gestation interval and 2.2 pups per litter), whereas heterozygous matings yielded 31 litters with 166 pups (0.9 litter per 21-d gestation interval and 4.7 pups per litter) |
