Hi A question for colours in Cocker spaniels- I have had my girl colour tested and know she carries red and brown and tan (she is blue roan) my question is her mum carries and white so would like to know if there is a test for this I thought it was the s locus which I tested but this just confirmed she is a parti. The and white gene should be there but how do I test for this.  Hoping you lovely people may be able to advise.  Many Thanks