Dog Dilute (d2)

The Dilute (d2) DNA test in dogs is essential for identifying coat color dilution caused by the d2 gene variant. This genetic test helps breeders and pet owners understand if their dog carries the dilute allele, which can affect coat appearance and sometimes skin health. By detecting the Dilute (d2) gene, owners can make informed breeding decisions to avoid potential health issues linked to color dilution. The test is quick, accurate, and widely used in various dog breeds prone to dilute coat colors. Understanding your dog's genetic makeup with the Dilute (d2) DNA test promotes responsible breeding and healthier pets. Ensure your dog’s coat color genetics are clear with this reliable DNA test. Stay informed and protect your dog's well-being today!

Abbreviation : d2

Analysed mutation : MLPH c.705G>C

Inheritance : Autosomal Recessive

Acronym

Observed frequency

Normal

Clinical classification

Coat-Related Traits

Analysed mutation

MLPH c.705G>C
p.(Q235H)

Mode of inheritance

Autosomal Recessive

Alternate name:

D Locus

Test summary:

The DNA test Dilute (d2) in dogs identifies the presence of the dilute gene, which affects coat color. Dogs with this gene often have lighter or faded fur, such as blue or silver shades. This test helps breeders understand coat color genetics and avoid potential health issues linked to dilution. Knowing a dog's dilute status can assist in responsible breeding decisions. Overall, the Dilute (d2) DNA test provides valuable insight into a dog's genetic makeup.

Available from the pack : Standard

This DNA test is included starting from our pack Standard — and is also part of the packs Standard, Advanced, Complete.

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Understanding the Dilute (d2) Gene in Dogs

The dilute (d2) gene is a genetic variation that affects the coat color of dogs. This gene causes a lightening of the pigmentation in the fur, resulting in shades that differ from the standard colors associated with specific breeds. The dilute effect can lead to a range of coat colors, including bluish-gray, fawn, and lightened versions of black or brown. This phenomenon occurs due to a mutation in the melanophilin gene (MLPH), which plays a crucial role in the distribution of melanin within hair follicles.

Phenotypic Effects of the Dilute Gene

When a dog carries the dilute gene, it can exhibit a distinct coat color that sets it apart from its non-dilute counterparts. This variation can affect not just the overall appearance of the dog but also how the color interacts with other genetic traits. For instance, a black dog with the dilute gene may appear gray, while a chocolate dog may take on a lighter, champagne-like hue. These changes can influence the dog’s visual appeal and are often a point of interest for breeders and dog enthusiasts alike.

Health Implications Associated with the Dilute Gene

While the dilute (d2) gene primarily affects coat color, it is essential to note that it can also be associated with certain health conditions. Dogs with the dilute gene may be predisposed to specific dermatological issues, such as a higher susceptibility to skin infections or sensitivities. Additionally, some studies suggest that dilute-colored dogs might experience increased risks of hearing impairments, particularly in breeds where this genetic trait is prevalent. However, further research is needed to fully understand the extent of these health implications.

Breeding Considerations for the Dilute Gene

When it comes to breeding dogs with the dilute gene, it is crucial for breeders to consider both the aesthetic and health aspects associated with this trait. Responsible breeding practices should take into account the potential health risks linked to dilute coloration. Breeders often utilize DNA testing to identify carriers of the dilute gene, allowing them to make informed decisions that prioritize the health and well-being of the offspring. By understanding the implications of the dilute gene, breeders can strive to produce healthy, well-tempered dogs that meet the desired breed standards.

Conclusion

The dilute (d2) gene plays a significant role in defining the coat color of dogs and carries with it various aesthetic and health considerations. Understanding this genetic trait can help dog owners, breeders, and enthusiasts make informed choices regarding breeding practices and health management. As research continues to evolve, the implications of the dilute gene will likely become clearer, further guiding responsible breeding and care for dogs with this unique coloration.

Breed recognized for the test : Dilute (d2)

Chow Chow
Sloughi
Thai Ridgeback

Interpretation of genotypes Genotype Status Learn more about the interpretation of genotypes FAQ: understanding the interpretation of result What does “Clear” mean? The animal does not carry the mutation. It will not develop the disease and will not pass it on. Is a “Carrier” serious? No. The animal is generally healthy but can transmit the mutation to its offspring. What if an animal is “Affected”? It carries two mutated copies. Clinical signs are expected depending on the disease. It should not be bred. Why are there differences between male / female? Some diseases are sex-linked, so their expression varies depending on the animal’s sex. The animal has two normal copies of the gene. No risk of developing or transmitting the disease. Heterozygous carrier: one mutated copy. The animal is usually not clinically affected but can pass the mutation to offspring. Male carrier or affected depending on the inheritance mode. Males have only one X or Y chromosome. Heterozygous female carrier: one mutated copy. She can pass the mutation on and may sometimes show mild clinical signs depending on the condition. Two mutated copies of the gene. The animal is at risk of developing the associated condition.

🧬 Interpretation of genotypes d2

Genotype

Status

🟡 D/D

Non-carrier - No effect

🟡 D/d2

Carrier - No effect

❌ d2/d2

Affected - Dilute

FAQ: understanding the interpretation

What does “Clear” mean?

The animal does not carry the mutation. It will not develop the disease and will not pass it on.

Is a “Carrier” serious?

No. The animal is generally healthy but can transmit the mutation to its offspring.

What if an animal is “Affected”?

It carries two mutated copies. Clinical signs are expected depending on the disease. It should not be bred.

Why are there differences between male / female?

Some diseases are sex-linked, so their expression varies depending on the animal’s sex.

Genotype Forecast for Offspring Mother Father Non-carrier Carrier Affected Favorable cross: majority Carrier risk is predominant. Majority affected Filter by mother's genotype Filter by father's genotype All Predict Offspring The animal has two normal copies of the gene. No risk of developing or transmitting the disease. Heterozygous carrier: one mutated copy. The animal is usually not clinically affected but can pass the mutation to offspring. Male carrier or affected depending on the inheritance mode. Males have only one X or Y chromosome. Heterozygous female carrier: one mutated copy. She can pass the mutation on and may sometimes show mild clinical signs depending on the condition. Two mutated copies of the gene. The animal is at risk of developing the associated condition.

Predict Offspring

Filter by mother's genotype Filter by father's genotype

D/D (Non-carrier)

D/d2 (Carrier)

d2/d2 (Affected)

DNA Test FAQ

What does this DNA test detect?

This DNA test detects the mutation associated with Dilute (d2) in order to identify clear, carrier, or at-risk animals.

Why test a breeding animal?

DNA testing helps breeders plan safer matings and reduce the risk of transmitting the mutation to offspring.

What is the inheritance mode of this test?

The inheritance mode reported for this test is Autosomal Recessive.

Which mutation is analysed in this test?

This test analyses the mutation MLPH c.705G>C.

Is a carrier animal necessarily affected?

Not necessarily. Interpretation depends on the inheritance pattern and the resulting genotype.

References

Bauer A, Kehl A, Jagannathan V, Leeb T. A novel MLPH variant in dogs with coat colour dilution. Anim Genet. 2018 Feb;49(1):94-97. doi: 10.1111/age.12632. Epub 2018 Jan 19.

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