Dog color patterns (IMAGE) University of Bern Caption Five different color patterns in dogs controlled by promoter variants at the gene for agouti signaling protein. The activity of the ventral promoter (VP) or the hair cycle specific promoter (HP) is schematically indicated under each dog. Credit NEE / Tosso Leeb Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.