[topknot]

If you are very knowledgable of the lines you may be able to make a prediction - they can be typey. But you have to know the lines/pedigree well and this is what takes years to know.

You can get a mix of pups with the wavy coat the first litter and a wavy coat can become dominant in the line, but depends on the pedigree and what hold it has on the line. You should never want to breed a yorkie with a wavy coat. I have seen too many yorkies out there in the public (as pets) with wavy coats and can get so bad they look like poodles almost. The weight of the coat can weigh a wavy coat down and not show as much, but once you cut it back you see the wave spring up. You will notice that most of the wave is in the rear area of the coat - with yorkies, but can be in the whole body coat. Just keep a good understanding and goal on the standard. There is nothing prettier than seeing a straight silky coat in movement. Beautiful!

You need to learn the lines - study up on pedigrees. This will help you. Best of luck in your researching and learning.