AFRMA - Fancy Mouse Genes, Genetic Code Listing

Fancy Mouse Genes, Genetic Code Listing

For more mouse genetics, see the AFRMA Mouse Genetics book, the articles on the Info Pages, and the article Mouse Keeping: Linkage.
See the AFRMA Mouse Color Standards book and the Standards pages for photos.

See also Fancy Mouse Genes, Alphabetical Name Listing sorted by the name of the mouse color or
Fancy Mouse Genes, Agouti-based Colors,
Fancy Mouse Genes, Black-based Colors,
Fancy Mouse Genes, Marked Mice, or
Fancy Mouse Genes, Coats & Misc. for breakdowns by name of mouse color.

Following are the mouse genes sorted by genetic code with colors in each gene section that needs that gene to make that color.

A B Bt C Ca D E Fr Fz Go Hr Hs Ll Ln Mo P Re Rn Ro Rw S Sa Si Tg U V Va W Wn

A: Agouti Series
A^y (dominant or lethal yellow)	Fawn: black-eyed	A^yA or A^ya (A^y–) (A^y gene changes agouti color to all yellow; called Agouti Yellow or Lethal Yellow)
	Fawn: pink-eyed	A^y– pp
	Gold: black-eyed	A^y–
	Gold: pink-eyed	A^y– pp
	Orange	B– ee, bb ee, A^y–, A^ya pp
	Red	A^y– bb
	Cream: black-eyed	A^y– B– c^chc^ch (chinchillated Fawn)
	Cream: ruby-eyed	A^y– bb c^chc^ch
	Cream: pink-eyed	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
	Sable	A^ya^t U–, A^ya, A^ya^t
	Sable: Blue	A^ya^t dd U–
	Sable: Chocolate	A^ya^t bb U–
	Sable: Dove	A^ya^t bb dd U–
	Sable: Marten	A^ya^t c^chc^ch U–
	Silver Fawn	A^yA sisi
	White: black-eyed	c^ec, A^y– c^ec^e, A– B– c^ec, c^ec^e ee, ss, Ww, ss Ww
A^vy (viable yellow)	Brindle	A^vy– (A^vy gene causes stripes in color; Viable Yellow gene)
A^w (white-bellied Agouti)	Agouti: white belly	A^w (A^w gene causes white or yellow bellies; a.k.a. A^L light-bellied Agouti)
A (agouti)	Agouti	AA or Aa (i.e. A–)
	Agouti: Blue	AA dd
	Agouti: Blue: pink-eyed	AA dd pp (Argente Creme)
	Agouti: Chocolate	A– bb (Cinnamon)
	Agouti Point Himalayan	AA c^hc or Aa c^hc
	Agouti Point Siamese	AA c^hc^h or Aa c^hc^h
	Cinnamon	A– bb (Chocolate Agouti)
	Agouti: Dove	AA bb dd (Blue Cinnamon)
	Dove Agouti	AA bb dd (Dove Agouti)
		AA bb dd (Blue Cinnamon)
	Silver Agouti	AA c^chc^ch
	Silver Agouti: pink-eyed	AA c^chc^ch pp (Argente Creme)
	Argente Creme	Aa^t c^chc^ch pp (pink-eyed Chinchilla) or AA c^chc^ch pp (pink-eyed Silver Agouti) or AA dd pp (pink-eyed Blue Agouti)
	Argente	A– pp (P.E. Agouti)
	Argente: Blue	AA dd pp (Pink-eyed Blue Agouti)
	Argente: Champagne	AA bb pp
	Argente: Dove	AA bb dd pp
	Silver Brown	AA sisi
a^t (tan)	Tans	a^ta^t
	Tan: Agouti	Aa^t
	Tan: Argente	Aa^t pp (P.E. Agouti Tan)
	Chinchilla	Aa^t c^chc^ch
	Chinchilla: Blue	Aa^t c^chc^ch dd (Squirrel)
	Squirrel	Aa^tc^chc^ch dd (Blue Chinchilla)
	Chinchilla: pink-eyed	Aa^t c^chc^ch pp (Argente Creme)
	Argente Creme	Aa^t c^chc^ch pp (pink-eyed Chinchilla) or AA c^chc^ch pp (pink-eyed Silver Agouti) or AA dd pp (pink-eyed Blue Agouti)
	Tan: Black	a^ta^t
	Tan: Blue	a^ta^t dd
	Tan: Champagne	a^ta^t bb pp
	Tan: Chocolate	a^ta^t bb
	Tan: Cinnamon	Aa^t bb
	Tan: Dove	a^ta^t bb dd
	Tan: Lilac	a^ta^t pp
	Tan: Pearl	a^ta^t sisi
	Tan: Roan	a^ta^t roro
	Tan: Silver	a^ta^t pp or a^ta^t dd pp
	Tan: Silver Black	a^ta^t sisi
	Tan: Silver Grey	a^ta^t sisi
	Tan: Splashed	a^ta^t Tg–
	Sable	A^ya^t U–, A^ya, A^ya^t
	Sable: Blue	A^ya^t dd U–
	Sable: Chocolate	A^ya^t bb U–
	Sable: Dove	A^ya^t bb dd U–
	Sable: Marten	A^ya^t c^chc^ch U–
	Siamese Sable: Marten	a^ta^t c^chc^h
	Siamese Sable: Smoke Pearl Marten	a^ta^t c^chc^h dd
	Fox	a^t– c^chc^ch or a^ta^t c^ec^e
	Fox: Black	a^ta^t c^chc^ch
	Fox: Blue	a^ta^t c^chc^ch dd
	Fox: Chocolate	a^ta^t bb c^chc^ch
	Fox: Dove	a^ta^t bb c^chc^ch dd
	Fox: Ivory	a^ta^t B– c^ec or a^ta^t bb c^ec
	Fox: Beige	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Fox: Coffee	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Fox: Reverse Siamese	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Spotted Tan	Aa^t ss, a^t– ss, (plus color genes)
	Spotted Tan: Banded	Aa^t W^shw^sh, a^t– W^shw^sh (plus color genes)
	Spotted Tan: Broken Merle	Aa^t ro^unro^un ss,
	Spotted Tan: Hereford	Aa^t wnwn, a^t– wnwn (plus color genes)
	Spotted Tan: Rump White	Aa^t Rwrw, a^t– Rwrw
	Spotted Tan: Variegated	Aa^t Ww, a^t– Ww (plus color genes)
a (non-agouti)	Black	aa
	Black: pink-eyed	aa pp (Lilac)
	Lilac	aa pp (P.E. Black)
	Blue: pink-eyed	aa dd pp (Silver)
	Silver	aa pp (P.E. Black) or aa dd pp (P.E. Blue)
	Chocolate	aa bb
	Champagne	aa bb pp (P.E. Chocolate)
	Dove	aa bb dd (chocolate blue, dilute Chocolate)
	P.E. Dove	aa bb dd pp (Lavender)
	Lavender	aa bb dd pp (P.E. Dove)
	Ivory	aa B– c^ec or aa bb c^ec
	Beige	aa B– c^ec^e or aa bb c^ec^e
	Coffee	aa c^ec^e
	Reverse Siamese	aa B– c^ec^e or aa bb c^ec^e
	Color Point Beige	aa c^ec^h
		aa bb c^chc dd (chinchillated Dove)
	Cream: pink-eyed	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
	Siamese Sable	aa c^chc^h
	Siamese Sable: Blue	aa c^chc^h dd
	Himalayan	aa c^hc
	Himalayan: Blue Point	aa c^hc dd
	Himalayan: Chocolate Point	aa bb c^hc
	Siamese: Seal Point	aa c^hc^h
	Siamese: Blue Point	aa c^hc^h dd
	Siamese: Chocolate Point	aa bb c^hc^h
	Siamese: Dove Point	aa bb c^hc^h dd
	Silver Black	aa sisi
	Silver Blue	aa dd sisi
	Silver Chocolate	aa bb sisi
	Silver Grey	aa sisi
	Pearl	aa sisi
a^e (extreme non-agouti)	Black: extreme	a^ea^e
B: Black/Brown Series
b (brown)	Chocolate	aa bb
	Chocolate Tan	a^ta^t bb
	Chocolate Fox	a^ta^t bb c^chc^ch
	Champagne	aa bb pp (P.E. Chocolate)
	Champagne Tan	a^ta^t bb pp
		aa bb c^chc dd (chinchillated Dove)
	Dove	aa bb dd (chocolate blue, dilute Chocolate)
	Dove Tan	a^ta^t bb dd
	Dove Fox	a^ta^t bb c^chc^ch dd
	P.E. Dove	aa bb dd pp (Lavender)
	Lavender	aa bb dd pp (P.E. Dove)
	Orange	B– ee, bb ee, A^y–, A^ya pp
	Ivory	aa B– c^ec or aa bb c^ec
	Ivory Fox	a^ta^t B– c^ec or a^ta^t bb c^ec
	Beige	aa B– c^ec^e or aa bb c^ec^e
	Beige Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Coffee Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Reverse Siamese	aa B– c^ec^e or aa bb c^ec^e
	Reverse Siamese Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Chocolate Point Himalayan	aa bb c^hc
	Chocolate Point Siamese	aa bb c^hc^h
	Dove Point Siamese	aa bb c^hc^h dd
	Chocolate Sable	A^ya^t bb U–
	Dove Sable	A^ya^t bb dd U–
	Silver Chocolate	aa bb sisi
	Red	A^y– bb
	Cream: ruby-eyed	A^y– bb c^chc^ch
	Cream: pink-eyed	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
	Argente: Champagne	AA bb pp
	Argente: Dove	AA bb dd pp
	Agouti: Chocolate	A– bb (Cinnamon)
	Cinnamon	A– bb (Chocolate Agouti)
	Cinnamon Tan	Aa^t bb
	Cinnamon: Blue	AA bb dd (Dove Agouti)
	Agouti: Dove	AA bb dd (Blue Cinnamon)
	Dove Agouti	AA bb dd (Dove Agouti)
Bt: Belted
bt (belted)	Belted	btbt
C: Color/Chromogen/albino Series
cⁱ (intense chinchilla)	Lemon	cⁱ (cⁱ gene has a more pronounced influence on phaeomelanin diluting the intense yellow pigment characteristic of C/C genotypes to a pale ocherous yellow color, bordering on a lemon tint; has very little if any affect on black pigment)
c^ch (chinchilla)	Chinchilla	Aa^t c^chc^ch
	Chinchilla: Blue	Aa^t c^chc^ch dd (Squirrel)
	Squirrel	Aa^tc^chc^ch dd (Blue Chinchilla)
	Chinchilla: pink-eyed	Aa^t c^chc^ch pp (Argente Creme)
	Silver Agouti	AA c^chc^ch
	Silver Agouti: pink-eyed	AA c^chc^ch pp (Argente Creme)
	Cream: black-eyed	A^y– B– c^chc^ch (chinchillated Fawn)
	Cream: ruby-eyed	A^y– bb c^chc^ch
	Cream: pink-eyed	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
		aa bb c^chc dd (chinchillated Dove)
	Argente Creme	Aa^t c^chc^ch pp (pink-eyed Chinchilla) or AA c^chc^ch pp (pink-eyed Silver Agouti) or AA dd pp (pink-eyed Blue Agouti)
	Fox	a^t– c^chc^ch or a^ta^t c^ec^e
	Fox: Black	a^ta^t c^chc^ch
	Fox: Blue	a^ta^t c^chc^ch dd
	Fox: Chocolate	a^ta^t bb c^chc^ch
	Fox: Dove	a^ta^t bb c^chc^ch dd
	Marten Sable	A^ya^t c^chc^ch U–
	Siamese Sable	aa c^chc^h
	Siamese Sable: Blue	aa c^chc^h dd
	Siamese Sable: Marten	a^ta^t c^chc^h
	Siamese Sable: Smoke Pearl Marten	a^ta^t c^chc^h dd
c^e (extreme dilution)	Ivory	aa B– c^ec or aa bb c^ec
	Ivory Fox	a^ta^t B– c^ec or a^ta^t bb c^ec
	Beige	aa B– c^ec^e or aa bb c^ec^e
	Beige Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Coffee	aa c^ec^e
	Coffee Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Reverse Siamese	aa B– c^ec^e or aa bb c^ec^e
	Reverse Siamese Fox	a^ta^t B– c^ec^e or a^ta^t bb c^ec^e
	Color Point Beige	aa c^ec^h
	White: black-eyed	c^ec, A^y– c^ec^e, A– B– c^ec, c^ec^e ee, ss, Ww, ss Ww
	White: pink-eyed	cc (albino; covers up the actual color/marking so can be either an agouti-based or black-based color) or c^ec^e pp or c^ec pp or c^hc pp. Note: extremely diluted P.E. Self colors or a P.E. Marked with all markings bred off can look like a P.E. White
c^h (Himalayan)	Himalayan	aa c^hc
	Himalayan: Agouti Point	AA c^hc or Aa c^hc
	Himalayan: Blue Point	aa c^hc dd
	Himalayan: Chocolate Point	aa bb c^hc
	Siamese: Agouti Point	AA c^hc^h or Aa c^hc^h
	Siamese: Seal Point	aa c^hc^h
	Siamese: Blue Point	aa c^hc^h dd
	Siamese: Chocolate Point	aa bb c^hc^h
	Siamese: Dove Point	aa bb c^hc^h dd
	Siamese Sable	aa c^chc^h
	Siamese Sable: Blue	aa c^chc^h dd
	Siamese Sable: Marten	a^ta^t c^chc^h
	Siamese Sable: Smoke Pearl Marten	a^ta^t c^chc^h dd
	Color Point Beige	aa c^ec^h
	White: pink-eyed	cc (albino; covers up the actual color/marking so can be either an agouti-based or black-based color) or c^ec^e pp or c^ec pp or c^hc pp. Note: extremely diluted P.E. Self colors or a P.E. Marked with all markings bred off can look like a P.E. White
c (albino)	Albino	cc (covers up the actual color/marking so can be either an agouti-based or black-based color; a.k.a. P.E. White)
	White: pink-eyed	cc (albino; covers up the actual color/marking so can be either an agouti-based or black-based color) or c^ec^e pp or c^ec pp or c^hc^h pp or c^hc pp. *Note:* extremely diluted P.E. Self colors or a P.E. Marked with all markings bred off can look like a P.E. White
Ca: Caracul
Ca (Caracul)	Caracul	Ca–
D: Dilute
d (dilute)	Blue	aa dd
	Blue Tan	a^ta^t dd
	Blue Fox	a^ta^t c^chc^ch dd
	Blue: pink-eyed	aa dd pp (Silver)
	Silver	aa pp (P.E. Black) or aa dd pp (P.E. Blue)
	Silver Tan	a^ta^t pp or a^ta^t dd pp
	Dove	aa bb dd (chocolate blue, dilute Chocolate)
	Dove Tan	a^ta^t bb dd
	Dove Fox	a^ta^t bb c^chc^ch dd
	Dove: pink-eyed	aa bb dd pp (Lavender)
	Lavender	aa bb dd pp (P.E. Dove)
		aa bb c^chc dd (chinchillated Dove)
	Opal	dd ee
	Silver Blue	aa dd sisi
	Blue Siamese Sable	aa c^chc^h dd
	Siamese Sable: Smoke Pearl Marten	a^ta^t c^chc^h dd
	Blue Point Himalayan	aa c^hc dd
	Blue Point Siamese	aa c^hc^h dd
	Dove Point Siamese	aa bb c^hc^h dd
	Blue Agouti	AA dd
	Blue Agouti: pink-eyed	AA dd pp (Argente Creme)
	Agouti: Dove	AA bb dd (Blue Cinnamon)
	Blue Cinnamon	AA bb dd (Dove Agouti)
	Dove Agouti	AA bb dd (Dove Agouti)
	Blue Argente	AA dd pp
	Dove Argente	AA bb dd pp
	Argente Creme	Aa^t c^chc^ch pp (pink-eyed Chinchilla) or AA c^chc^ch pp (pink-eyed Silver Agouti) or AA dd pp (pink-eyed Blue Agouti)
	Cream: pink-eyed	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
	Blue Chinchilla	Aa^t c^chc^ch dd (Squirrel)
	Squirrel	Aa^tc^chc^ch dd (Blue Chinchilla)
	Dove Sable	A^ya^t bb dd U–
E: Extension
E^so (sombre or dominant black)	Black: dominant	E^so
e (recessive yellow)	Orange	B– ee, bb ee, A^y–, A^ya pp
	Opal	dd ee
	White: black-eyed	c^ec, A^y– c^ec^e, A– B– c^ec, c^ec^e ee, ss, Ww, ss Ww
Fr: Frizzie (code by Bonnie Walters)
fr (frizzie)	Frizzie	frfr (Bonnie Walters’ code; there are other recessive and dominant curly genes)
	Frizzie Long Hair	frfr ll or frfr gogo
	Frizzie Satin	frfr sasa
	Frizzie Satin Long Hair	frfr ll sasa or frfr gogo sasa
Fz: Fuzzy/Frizzled
fz (fuzzy/frizzled)	Rex	fzfz
	Frizzled/Fuzzy	fzfz (a.k.a. Rex in the N.M.C.)
Go: Angora
go (angora)	Long Hair	ll or gogo
	Long Hair Satin	ll sasa or gogo sasa
	Frizzie Long Hair	frfr ll or frfr gogo
	Frizzie Satin Long Hair	frfr ll sasa or frfr gogo sasa
Hr: Hairless
hr (hairless)	Hairless	hrhr
hr^rh (rhino)	Hairless: rhino	hr^rhhr^rh
Hs: Headspot
hs (headspot)	Head Spot	hshs
Ll: Long Hair (code by Bonnie Walters)
ll (long hair)	Long Hair	ll or gogo
	Long Hair Satin	ll sasa or gogo sasa
	Frizzie Long Hair	frfr ll or frfr gogo
	Frizzie Satin Long Hair	frfr ll sasa or frfr gogo sasa
Ln: Leaden
ln (leaden)	Leaden	lnln (looks like Blue)
Mo: Mottled
Mo^br (brindle)	Brindle: Sex-linked	Mo^br (causes mottling/stripes in color; a.k.a. X-Brindle or English Brindle)
P: Pink-eyed Dilution
p (pink-eyed)	Argente	A– pp (P.E. Agouti)
	Argente Tan	Aa^t pp
	Argente: Blue	AA dd pp (Pink-eyed Blue Agouti)
	Pink-eyed Blue Agouti	AA dd pp (Argente Creme)
	Argente: Champagne	AA bb pp
	Argente: Dove	AA bb dd pp
	Argente Creme	Aa^t c^chc^ch pp (Pink-eyed Chinchilla) or AA c^chc^ch pp (Pink-eyed Silver Agouti) or AA dd pp (Pink-eyed Blue Agouti)
	Pink-eyed Chinchilla	Aa^t c^chc^ch pp (Argente Creme)
	Pink-eyed Silver Agouti	AA c^chc^ch pp (Argente Creme)
	Pink-eyed Fawn	A^y– pp
	Pink-eyed Gold	A^y– pp
	Orange	B– ee, bb ee, A^y–, A^ya pp
	Pink-eyed Cream	A^ya c^chc^ch pp or A^ya dd pp or aa bb c^chc^ch dd pp (chinchillated Dove)
	Pink-eyed Black	aa pp (Lilac)
	Lilac	aa pp (P.E. Black)
	Lilac Tan	a^ta^t pp
	Pink-eyed Blue	aa dd pp (Silver)
	Silver	aa pp (P.E. Black) or aa dd pp (P.E. Blue)
	Silver Tan	a^ta^t pp or a^ta^t dd pp
	Champagne	aa bb pp (P.E. Chocolate)
	Champagne Tan	a^ta^t bb pp
	Pink-eyed Dove	aa bb dd pp (Lavender)
	Lavender	aa bb dd pp (P.E. Dove)
	Pink-eyed White	cc (albino; covers up the actual color/marking so can be either an agouti-based or black-based color) or c^ec^e pp or c^ec pp or c^hc pp. Note: extremely diluted P.E. Self colors or a P.E. Marked with all markings bred off can look like a P.E. White
Re: Rex
Re (rex)	Astrex	ReRe
Rn: Roan (dominant)
Rn (roan)	Roan: dominant	Rn–
Ro: Roan (recessive; code by Virginia Pochmann)
Ro (roan, recessive)	Roan: recessive	roro
	Roan: Tan	a^ta^t roro
Ro^un (roan, unstable)	Merle	ro^unro^un (causes solid patches on a roaned background)
	Broken Merle	ro^unro^un ss
	Broken Merle: Spotted Tan	Aa^t ro^unro^un ss, a^t– ro^unro^un ss (plus color genes)
Rw: Rumpwhite
Rw (rumpwhite)	Rumpwhite	Rwrw
	Rump White Spotted Tan	Aa^t Rwrw, a^t– Rwrw
S: Piebald Spotted
s (piebald)	Broken Marked	ss
	Dutch	ss
	Even Marked	ss
	Hereford	wnwn or ss
	Variegated	Ww or Ss Ww
	Spotted Tan	Aa^t ss, a^t– ss, (plus color genes)
	Broken Merle	ro^unro^un ss
	Spotted Tan; Broken Merle	Aa^t ro^unro^un ss, a^t– ro^unro^un ss (plus color genes)
	White: black-eyed	c^ec, A^y– c^ec^e, A– B– c^ec, c^ec^e ee, ss, Ww, ss Ww
Sa: Satin
sa (satin)	Satin	sasa
	Long Hair Satin	ll sasa or gogo sasa
	Frizzie Satin	frfr sasa
	Frizzie Satin Long Hair	frfr ll sasa or frfr gogo sasa
Si: Silvering
si (silvering)	Silver Black	aa sisi
	Silver Black Tan	a^ta^t sisi
	Silver Blue	aa dd sisi
	Silver Brown	AA sisi
	Silver Chocolate	aa bb sisi
	Silver Fawn	A^yA sisi
	Silver Grey	aa sisi
	Silver Grey Tan	a^ta^t sisi
	Pearl	aa sisi
	Pearl Tan	a^ta^t sisi
Tg: Transgenic
Tg (transgenic)	Splashed	Tg–
	Splashed Tan	a^ta^t Tg–
U: Umbrous
U (umbrous)	Sable	A^ya^t U–, A^ya, A^ya^t
	Sable: Blue	A^ya^t dd U–
	Sable: Chocolate	A^ya^t bb U–
	Sable: Dove	A^ya^t bb dd U–
	Sable: Marten	A^ya^t c^chc^ch U–
V: Waltzer
v (waltzer)	Waltzers	vv
Va: Varitint-waddler
Va (varitint-waddler)	Varitint-waddler	Va– (gene causes a tri-colored coat, deafness, and circling defect)
W: Dominant Spotting
W (variegated)	Variegated	Ww or Ss Ww
	Variegated Spotted Tan	Aa^t Ww, a^t– Ww (plus color genes)
	White: black-eyed	c^ec, A^y– c^ec^e, A– B– c^ec, c^ec^e ee, ss, Ww, ss Ww
W^sh (sash)	Banded	W^shw^sh
	Banded Spotted Tan	Aa^t W^shw^sh, a^t– W^shw^sh (plus color genes)
Wn: white nose
wn (white nose)	Hereford	wnwn or ss
	Hereford Spotted Tan	Aa^t wnwn, a^t– wnwn (plus color genes)

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

Note: Lilac U.S. = Dove U.K. (P.E. Black), Dove U.S. = Lilac U.K. (Chocolate Blue or Dilute Chocolate)

Updated December 12, 2024