AFRMA

American Fancy Rat & Mouse Association

Fancy Rat Genes, Alphabetical Name Listing

Coats & Misc.


For more rat genetics, see the AFRMA Rat Genetics book, specific articles listed with the various standards descriptions, and the articles on the Info Pages: Breeding – Colors/GeneticsRat Genetics, part 1, Rat Genetics, part 2, Rat Genetics, part 3. See also the Rat Biology articles Where do different rat coat types come from?, The hairless hr mutation, The dumbo rat mutation and human analogues
See the AFRMA Rat Color Standards book and the Standards pages for photos.

Go to Fancy Rat Genes, Alphabetical Name Listing for a complete list.

Go to Fancy Rat Genes, Agouti-based Colors,
Fancy Rat Genes, Black-based Colors, or
Fancy Rat Genes, Marked Rats.

See also Fancy Rat Genes, Genetic Code Listing for breakdowns by genetic code.


Coats & Misc.
B
Bristle CoatBr (code given by AFRMA)
C
Cowlickcw
Curly 1Cu1
Curly 2Cu2
D
Dumbodmbodmbo (ear/skull gene)
E
EssexHro++ or Hro++H (color fading gene; has Berkshire markings but breeds as a Self)
F
Fuzzyfzfz or frH
H
Hairlesshrhr or fzfz
Hairless: CR (Charles River)frCR
K
Kinkykk
N
Nakednn
Nudernurnu (Rowett nude)
O
Odd-Eyeoe or ? (has 2 different colored eyes; usually pink/black but can be ruby/black or pink/ruby)
R
Raggedrgrg
RexRere
Roan (Husky)? (recessive; roan gene lightens color with each moult till rat is nearly white; always in Berkshire or Berkshire Blaze markings)
Roan: Striped? (recessive; a.k.a. Banded Husky)
S
Satinsasa
ShaggySh
Shornshnshn
T
Taillessstst? (recessive)
V
Velvet? (recessive)
W
Wavywvwv

C: Albino Locus (Burmese)+ (codes by Nichole Royer)
CFull color (no dilution)
ce+Extreme dilute
chAcromelanism (Himalayan/Siamese)
ci+Intense dilute
cAlbino (Pink-Eyed White)

Note: Many rat colors/varieties have not been studied by geneticists so codes are given by fancy rat genetics experts or are unknown

Note: Capital letter=dominant genes unless otherwise noted; lower case letter=recessive genes

“–” means that either the dominant or recessive allele could occupy that space without affecting the outcome

* = g or Me or Dal code by Nichole Royer

** = Cscs Fyfy code by Ann Storey, N.F.R.S.

+ = ce or ci code by Nichole Royer

++ = Hro code by Sheila Sowter, N.F.R.S.

? = genetics unknown

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Updated March 26, 2016