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Phenotypes Associated with This Genotype
Genotype
MGI:4829948
Allelic
Composition
am/a
Genetic
Background
involves: 101/Rl * C3H/Rl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (166 available); any a mutation (468 available)
am mutation (2 available); any a mutation (468 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• Background Sensitivity: there is a continuum of color pattern ranging from all black indistinguishable from mice with a ae genotype, see ae , to degrees of yellow mottling on a black background, to mice with an agouti coat color pattern (J:5964)
• Background Sensitivity: the genetic background of the mother influences the coat pattern of the offspring (J:5964)
• mice are mottled with agouti and nonagouti patches of fur with hairs of both types intermingled at the pattern edges (J:29504)
• matings of genotype am/a to a/a mice produce about 50% mottled offspring

integument
• Background Sensitivity: there is a continuum of color pattern ranging from all black indistinguishable from mice with a ae genotype, see ae , to degrees of yellow mottling on a black background, to mice with an agouti coat color pattern (J:5964)
• Background Sensitivity: the genetic background of the mother influences the coat pattern of the offspring (J:5964)
• mice are mottled with agouti and nonagouti patches of fur with hairs of both types intermingled at the pattern edges (J:29504)
• matings of genotype am/a to a/a mice produce about 50% mottled offspring

cellular
• the genetic background of the mother influences the coat pattern of the offspring


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory