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Phenotypes Associated with This Genotype
Genotype
MGI:4454432
Allelic
Composition
a/a
Lystbg/Lystbg
Tyrp1b/Tyrp1b
Genetic
Background
involves: C3H/Rl * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (166 available); any a mutation (468 available)
Lystbg mutation (6 available); any Lyst mutation (227 available)
Tyrp1b mutation (28 available); any Tyrp1 mutation (160 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• 80% of premelanosomes in the choroid and retina fuse to form giant granules
• 80% of premelanosomes in the choroid and retina fuse to form giant granules

vision/eye
• 80% of premelanosomes in the choroid and retina fuse to form giant granules
• 80% of premelanosomes in the choroid and retina fuse to form giant granules


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
12/30/2025
MGI 6.24
The Jackson Laboratory