Yes, they were.
There is line breeding but, I don't think that the coefficent values are that close. Since the yorkie breed cannot bred pheno type to pheno type, line breeding is the only way to set type, once your lines are established you pretty much know what your lines will produce. The problem with line breeding is that you can box yourself in and have to breed outside the lines and then you have to be concerned with how the breeding is going to mix genetically.
In the ole days, when well known breeders had the big kennels (which are frowned upon now) the breeders had a wider range of pedigrees within to the kennel to select from.
__________________ Mardelin Yorkshire Terriers |