Chocolate vs. Chocolate Tort vs. Clean Fawn



The Chocolate is a "self" color with extension gene E.

aabbC-D-E-

The Chocolate tort is also a "self" color but without the extension gene E.

aabbC-D-ee

thus the self chocolate color is not extended to the wool on the body.  The only difference between the two colors is in the E series.  The chocolate color is extended to the wool by the E gene while the chocolate tort only has the chocolate on the face, the chocolate color is not extended to the wool due to the non-extension gene ee.   

The clean fawn is chocolate based fawn, it's a wide band agouti pattern without the extension gene.

A-bbC-D-ee

Other than being the agouti pattern the rest of the genetic make up is the same as chocolate tort.  Due to the A gene, the fawn has white eye circles and white half moon under the nose and the tummy is also white.   The chocolate tort does not have white eye circle, no white half moon under nose and tummy color is about the same as the back.