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Gene Information

Genetic Alterations
Spontaneous mutation
Genotype Determination
Coat color is an off-white. Individual hairs are largely devoid of pigment, but small masses of sepia material or occasional granules occur in the proximal portion. The agouti band and tip of hair are completely devoid of pigment. Older deer mice are lighter in color than the young. Animals- superficially resemble albinos. Ivory animals gave a greater ability to oxidize tyrosine and dihydroxyphenylalamine than do albino deer mice.
Primary Reference

Huestis RR. Ivory, a feral mutation in Peromyscus. J Hered. 1938;29, 235-238. Reference Link

Clark FH. Inheritance and linkage relations of mutant characters in the Deer Mouse, Peromyscus maniculatus. Contrib. Lab. Vert. Gene., 1:1-9. B2a. Reference Link

Foster M and Barto E. 1963. Physiological genetic studies of coat color pigmentation in the deer mouse. Abstracts of Papers Presented at the 1963 meeting of the Genetics Society of America, Amherst, MA. A5b. Reference Link

For more information, please see Ivory 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 (i/i) Coat color is off white

Heterozygous (i/+): 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.