Quote:
Originally Posted by cesar49  what are the visible differences between the biewer and the partis?
is it the color standards? is it also the size? or structures..
or just the arrangement of colors?
there is no standard for the partis.
but the biewer standards are specific..  |
Since the partis are AKC registered yorkshire terriers, our standards for type, size, conformation would be the same as the standard colored yorkshire terrier. As for color placement on the parti yorkies, there are different spotting genes that cause different amounts of white. My guess with the biewers - who require black saddles, white legs, white tip of tail - have the gene that is responsible for that white type of pattern, which is the Irish spotting gene but many of our parti lines have a less predictable spotting gene (Piebald) and the placement of pigmented patterns is more random.
See the link below that illustrates these different spotting genes in the Australian Shepherds.
White Aussies and Pattern Whites