Skip to content
Our laboratory closes for the holidays on 24th December and will reopen on Friday 3rd January 2025.
Our laboratory closes for the holidays on 24th December and will reopen on Friday 3rd January 2025.
Co-Locus (cocoa)

Co-Locus (cocoa)

Turnaround: 1-2 weeks

£30.00 - £30.00
£30.00
£30.00 - £30.00
£30.00

The Co-Locus is a region of your dog's DNA which controls a brown/chocolate coat colour present in French Bulldogs known as cocoa. The cocoa colouring generally tends to be darker than the chocolate produced by the B-locus though this can vary depending on the combination of other colour genes.

Your dog can only be cocoa if they are also E/E or E/e on the E-Locus. The Co-Locus behaves in a similar way to the B-locus meaning you can have solid cocoa colour as we all, for example, cocoa and tan.

The cocoa colour is controlled by mutations on the HPS3 gene.

 

    Description

    Scientific references

    Kiener S, Kehl A, Loechel R, Langbein-Detsch I, Müller E, Bannasch D, Jagannathan V, Leeb T. Novel Brown Coat Color (Cocoa) in French Bulldogs Results from a Nonsense Variant in HPS3. Genes (Basel). 2020 Jun 9;11(6):636. doi: 10.3390/genes11060636

    Laukner A, Truchet L, Manukjan G, Schulze H, Langbein-Detsch I, Mueller E, Leeb T, Kehl A. Effects of Cocoa Genotypes on Coat Color, Platelets and Coagulation Parameters in French Bulldogs. Genes (Basel). 2021 Jul 19;12(7):1092