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The Fun Mouse: Varieties Introduction: Any Other Color Pattern

* Click pictures to see them larger.

Contents:


BrindleLab name: Viable Yellow
Fancier name: Brindle, American Brindle, Tiger Brindle, etc.
Genotype: Avy/*
Chromosome: 2
Originated: Spontaneous mutation (transposon insertion)
Show class: Brindle
General description: Stripped similar to a tiger from head to tail. Less define stripes on the belly.

These brindles are genetically linked to obesity, therefore they are more prone to health problems caused by the extra weight such as heart issues, diabetes, infertility, shortened life span, among many other conditions. These brindles are more prone to food allergies and tumors as well. Brindles are among of the number one choice (along with hairless) for labs to use in cancer research because of how well they 'accept' and 'grow' tumors. This does NOT mean they 'will' have the problems mentioned, they are just more prone to them than most other varieties. It is very important to obtain this variety from a GOOD breeder as that will greatly help prevent these problems. Brindles from bad breeders, including pet shops, are MUCH more likely to suffer health issues.

BrindleLab name: (non-agouti) Brindled
Fancier name: Brindled, Sex Linked Brindle, X-Brindle, English Brindle, etc.
Genotype: a/a Mobr/* Note that Brindled is Sex linked. Homozygous Brindled is lethal as well as brindled bucks.
Chromosome: Brindled is on the X chromosome.
Originated: Spontaneous mutation (point mutation)
Show class: Brindle
General description: Striped similar to a tiger from head to tail. Less define stripes on the belly. They can be any color with eyes to match. Stripes on English brindles usually get wider with age.

These Brindled mice do not have the same health issues as Brindle (description above). The health of the females is the same as any other mouse. They are, however, sex linked. This means that outside of a lab, only females survive. Males suffer from copper deficiency, anemia. They appear similar to himalayan mice, with points. However, these points are part of their skin (where as a himalayan has pointed fur, not skin). They also tend to have extremely curly (spiral) whiskers regardless of coat type.

Note that the white spotting on the mouse pictured is piebald s/s and NOT a part of the brindled pattern.

RoanLab name: (non-agouti) Roan or Roan Freckled
Fancier name: Roan
Genotype: a/a Rn/* and/OR a/a Rnfkl/*
Chromosome: 14
Originated: Both were Spontaneous mutations in lab stock. Roan was first found in gremlin stock while Freckled was first found in stock carrying t-alleles.
Show class: Roan
General description: Coat is a mixture of white hairs and any other color which is evenly distributed throughout the body. Eyes should match the body color. Some roans have more white hairs on their belly (making them appear almost fox-like) while others do not. The roan gene tends to dilute the base color of the mouse (i.e. a black mouse will often be 'off black', sometimes almost blue in appearance).

MerleLab name: unknown at the present time
Fancier name: Merle
Genotype: unknown at the present time. However, it is believed to be a modifier of roan or another gene which is stopping the roaning in areas, leaving solid patches (much like how the splashed gene stops c-dilute in areas).
Chromosome: -
Originated: -
Show class: Merle
General description: Coat is marble-like in pattern. Lighter roan body with distributed patches of a solid color. Eyes to match the base color. Roans should not be mistaken with white spotted mice or splashed.
(also read Roan, above)

HimalayanFancier name: Himalayan
Genotype: a/a ch/c
Show class: Himalayan
General description: White body with define dark points on the nose, ears, feet, and tail. Pink eyes.

Click here to see an illustration of this variety.

Color Point BeigeFancier name: Color Point Beige
Genotype: a/a ce/ch
Show class: Color Point beige
General description: Color Point beige look similar to Himalayan with dark points on their nose, ears, feet and tail, but they also have dark eyes and an off white (creamy) body.

SiameseLab name: (non-agouti) Himalayan
Fancier name: Siamese (homozygous "Himalayan" makes what a fanciers call Siamese)
Genotype: a/a ch/ch
Chromosome: The Himalayan allele is on chromosome 7.
Originated: Spontaneous mutation (Point mutation)
Show class: Siamese
General description: Similar to the Himalayan but with larger points and creamy body shading. Ruby eyes.

Reverse SiameseLab name: Unknown
Fancier name: Reverse Siamese
Genotype: Unknown
Chromosome: Unknown (likely having to do with extreme dilute ce)
Originated: Unknown
Show class: Reverse Siamese
General description: Any color mouse with bright white points at the nose, ears, feet, and tail. Reverse Siamese are usually (possibly always) coffee with white points.

BurmeseFancier name: Burmese
Genotype: a/a cch/ch
Show class: Burmese, Siamese Sable
General description: Burmese can come in almost any color with dark points at the mouses nose, feet, and tail. Points are the same color as the body, just darker. Burmese can vary in shade from dark chocolate (making the points indefinable) to light brown with dark points.

Pictured: Burmese a/a cch/ch

SableLab name: Yellow, Tan, Umbrous-Patterned
Fancier name: Sable
Genotype: Ay/at Up/*
Chromosome: At the present time, the chromosome Umbrous-Patterned is located on is unknown.
Originated: Spontaneous mutation (First discovered in a Peru stock mouse with high frequency of non-pairing of the sex chromosomes, after introduction of the yellow allele Ay)
Show class: Sable
General description: Mouse should have a dark back fading into a red-ish-tan underside.

Pictured: The Sable pictured here is not a "true" sable, genetically. She does, however, possess an amazing likeness to a true sable. She is recessive yellow genetically.

SplashedLab name: Unknown at the present time.
Fancier name: Splashed
Genotype: Unknown at the present time. However, speculation is that splashed is transgenic. More about Splashed in the Tri Color section.
Chromosome: Unknown at the present time.
Originated: Unknown at the present time.
Show class: Splashed
General description: Coat has darker splashes of color on a colored mouse. Splashed can come in any color with eyes to match. Splashed is not to be confused with Variegated, Brindle, or Brindled. Some forms of Splashed can be indistinguishable from Brindled and Brindle to the eye (such as lilac forms of each as well as, though not limited to, CP Beige Brindled and Brindle).

SplashedTop Picture: The mouse on top is a Cream Splashed Satin Rex (his color is slightly darker than many Cream Splashed. Some Cream Splashed have almost yellow looking cream splashes on a slightly off white background) and the mouse on the bottom is a Burmese Splashed Rex (some Burmese Splashed [and mock chocolate] mice are so dark that you can't see the splashes at all). Both are juvaniles.
Bottom Picture: The dark splashed puppies are Coffee Splashed and the light splashed puppies are Color Point Beige Splashed. Coats are standard and rex.
Click pictures for larger image.

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