There are two major reasons why you may be seeing some "unresolved" ancestry in your dog. First, the long stretches of DNA we use to identify the breed ancestry in your dog's family tree get shorter and shorter with every generation. Over enough generations, these fragments of DNA get too short to confidently assign to any one breed in our reference database, so we assign them as "unresolved."
The other reason you may be seeing some unresolved ancestry is that your dog contains a unique genetic signature not yet reflected in our reference database. While our breed database is extensive, there are some breeds that have genetic diversity we haven't yet accounted for. Over time, as our database grows, we may be able to account for that genetic diversity and resolve those "unresolved" portions.
If you know your lines represent some unique diversity within your breed, please consider contributing to our scientific process by uploading your dog's registration documentation so we can revisit them when we add more dogs to our database. For more information on how to upload documents to your dog's profile, you can take a look at this article.
Have questions? Your MyEmbark account includes information about your dog's sample status, your dog's results, and many other helpful resources. Log in to your account here!