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Gene Information

Genetic Alterations
Spontaneous mutation
Genotype Determination
There is distinctly diluted dorsal pelage due to clumping of pigment granules occurs in the proximal portion of the hair. The undercoat is not as light as in silver. An overall platinum-gray color in the subadult molt deepens into the diluted tan-gray of the adult. The dorsal body hairs, when parted, appear to be white at the base. Dark-tipped hairs are present, particularly on the head, but are reduced in number. The ears are pale colored and the tail stripe is pale and less distinct. Scrotal pigment is lacking. The eyes are dark, but have a reddish-brown cast. Contrasted with silver, the pelage, when parted, is tricolored, having a gray subterminal band.
MeSH Terms
  • Alleles
  • Animals
  • Eye Color
  • Genes, Recessive
  • Hair Color
  • Mutation
  • Peromyscus/genetics
Strain Development
Source: About 1950. University of Michigan. This mutant was recognized in a laboratory colony among F2 of P.m. blandus (Alamogordo NM) and P.m. ruftnus (Deadman's Flat AZ).
Primary Reference

Dodson KM., Dawson WD, Van Ooteghem SO, Cushing BS, and Haigh GR. Platinum coat color locus in the deer mouse. J Hered. 1987 May-Jun;78(3):183-6. (Medline PMID: 3611714)

For more information, please see Platinum on the Peromyscus Genetic Stock Center website.

Colony and Husbandry Information

Colony Surveillance Program and Current Health Reports

For more information about this colony's health status contact
Coat Color
Homozygous (plt/plt) coat color is an overall platinum-gray color

Heterozygous (plt/+) are the same a wild-type.


MMRRC Breeding System
Not applicable; only cryopreserved sperm is available. The parent colony was sufficiently large to use a random breeding scheme
Breeding Scheme(s)
Not applicable; only cryopreserved sperm is available; mice cryorecovered (see below) can be bred Wild-type female x Wild-type male
Overall Breeding Performance
Peromyscus mice breed best in a 16:8 light / dark cycle.
Average litter size
Recommended wean age
25 days

Order Request Information

Male mice were obtained from the Peromyscus Genetic Stock Center as part of a long term project to develop cropreservation techniques for Peromyscus. Sperm have been cryopreserved and are available. However, cryorecovery techniques have yet to be developed.

Distribution of this strain requires submission of the MMRRC Conditions of Use (COU). A link to the COU web form will be provided via email after an order has been placed; the form should be completed then or the email forwarded to your institutional official for completion.

- Products for this strain are Not Yet Available for Ordering
- If you register interest in this strain, you will be notified when it becomes available for ordering.

To request material from the MMRRC: Please fill out our on-line request form (accessible from the catalog search results page, or click the Request this Strain button in the fees section). If you have questions or need assistance completing this form, you may call Customer Service at (800) 910-2291 (in USA or Canada) or (530) 757-5710 (international calls). Before you call, please have with you: the MMRRC item number, quantity needed, Bill-to and Ship-to contact information.