Basic Color Genetics: Chocolate and Chocolate Tort

This post compares the chocolate and chocolate tort.

 

Chocolate, the color genes are: aabbC-D-E-
It's non-agouti, brown/chocolate family, full color, non-dilute, extended color.


If the last part E- is replaced by non-extension genes, then we have the following:

Chocolate Tort is the non-extension of Chocolate. 
The color genes are: aabbC-D-ee
In translation: non-agouti, brown/chocolate family, full color, non-dilute, non-extension.

If you compare:
chocolate;        aabbC-D-E-
chocolate tort; aabbC-D-ee

The only difference is whether the chocolate color is being extended or not extended.  If extended, it's chocolate; if not extended, it's chocolate tort. 
Both are non-dilute, thus both have brown eyes.