Animal Genetics



New Canine Test

Cocoa/French Bulldog Chocolate
Please see: Cocoa

New Equine Test

New test available for Quarter Horses and related breeds.
Please see: Immune-Mediated Myositis (IMM)

Equine Test

Equine Speed and Distance
Please see: Performance Testing

Mushroom Dilution


Mushroom is a unique recessive coat color type found in the Shetland Pony. In 2019 the researchers using 12 Mushroom colored horses were able to map the phenotype to a frameshift mutation in MFSD12 on equine chromosome 7. This recessive dilution gene that affects red pigment in horses. Mushroom is a unique coat color phenotype found in the Shetland Pony.


Test Results:

Animal Genetics offers DNA testing for the Mushroom Coat color Dilution. The genetic test verifies the presence of the MFSD12 mutation and presents results as one of the following:

Mu/Mu Homozygous Horse is positive for Mushroom, and carries two inherited copies of the gene. The phenotype of the homozygous Mushroom horse will be of dilute appearance if the base coat is Red. The homozygous Mushroom specimen will pass the mutated gene to 100% of foals, but may only produce diluted offspring if bred to another Mushroom carrier.
n/Mu Heterozygous Horse has one copy of Mushroom, having inherited the trait from one parent. No visual change to carrying horse. The horse will pass the mushroom dilution gene to approximately half of foals when bred.
n/n Negative Horse can be considered a non-carrier of the Mushroom gene.

    Submit a Sample for Testing:

    To submit a sample for testing please click on ORDER and download a sample submission form. Then follow the sample collection and submission instructions.


    Cost per sample is $25.00. Please see our Equine Fee Schedule for all equine testing rates.