Agouti Based Coat Colors

Genetics terms:      Allele      Gene      Genotype       Phenotype       Dominant Genes- can not be carried, but can be masked. [ex. the dominant Pearl gene will only express itself on a mink rat, therefore a black rat carrying the recessive mink gene could genetically be pearl, while phenetically being black]      Recessive Genes- can be carried from generation to generation and will only express itself when paired with an identical recessive gene making them homozygous recessive. [ex. a/a (black) x a/a (black) will produce all black babies unless other recessivce genes are carried by the parents]      Homozygous -  Having identical alleles for a single trait.                                  ~ homozygous recessive carries two copies of the allele that codes for the recessive trait. [ex. a/a is a rat expressing the recessive trait of black (non-banded) hair]                                  ~ homozygous dominant carries two copies of the allele that codes for the dominant trait. [ex. A/A is a rat expressing the dominant trait of agouti (banded or ticked) hair]      Heterozygous - A rat is heterozygous for a particular gene when two different alleles occupy the gene's position on the homologous chromosomes. Heterozygous genotypes are represented by a capital letter (representing the dominant allele) and a lowercase letter (representing the recessive allele) [ex. A/a is an agouti rat carrying the black gene]    AGOUTI (TICKED/BANDED) COLORS  Recessive  Heterozygous  Homozygous Dominant  Agouti a/a black   A/a ticked brown to reddish brown coat with black eyes carries black [a] Agouti color standards- RatsPacNW:  Deep to light chestnut, undercoat will be darker deep slate, black to dark guard hairs.  Belly a silver gray.  Eyes black. AFRMA: The color to be a rich chestnut with dark slate at the base of the hair. Coat is evenly ticked with black guard hairs. Belly color will be silver gray. Eye color is black.  A/A ticked brown to reddish brown coat with black eyes Agouti color standards- RatsPacNW:  Deep to light chestnut, undercoat will be darker deep slate, black to dark guard hairs.  Belly a silver gray.  Eyes black. AFRMA: The color to be a rich chestnut with dark slate at the base of the hair. Coat is evenly ticked with black guard hairs. Belly color will be silver gray. Eye color is black.  Fawn also known as Topaz  a/a  r/r beige  A/a r/r ticked fawn color with red eyes carries black [a] Fawn color standards- RatsPacNW:  deep orange color, may be paler gray at base.  Eye color ruby. AFRMA: Color is a rich, golden orange, as deep as possible. Belly color will be of a slightly lighter shade. Eye color is dark ruby.  A/A r/r ticked fawn color with red eyes Fawn color standards- RatsPacNW:  deep orange color, may be paler gray at base.  Eye color ruby. AFRMA: Color is a rich, golden orange, as deep as possible. Belly color will be of a slightly lighter shade. Eye color is dark ruby.    Amber  a/a p/p champagne  A/a p/p ticked amber with pink eyes carries black [a] Amber color standards- RatsPacNW: An light orange/fawn color with pink eyes AFRMA: Color is a light golden fawn, evenly interspersed with light hairs. Belly color to be light but not white. Eye color is red. A/A p/p ticked amber with pink eyes Amber color standards- RatsPacNW: An light orange/fawn color with pink eyes AFRMA: Color is a light golden fawn, evenly interspersed with light hairs. Belly color to be light but not white. Eye color is red.  Blue Agouti  a/a g/g blue  A/a g/g ticked brown and blue with black eyes carries black [a] Blue Agouti color standards- RatsPacNW: Medium to light slate blue with with a tan tip hair shaft, guard hairs will be dark.  Eyes black. AFRMA: Color to be medium slate at the base of the hair with a yellow-tan band on top. Coat is evenly ticked with blue guard hairs. Belly color will be silver blue. Eye color is black.  A/A g/g ticked brown and blue with black eyes Blue Agouti color standards- RatsPacNW: Medium to light slate blue with with a tan tip hair shaft, guard hairs will be dark.  Eyes black. AFRMA: Color to be medium slate at the base of the hair with a yellow-tan band on top. Coat is evenly ticked with blue guard hairs. Belly color will be silver blue. Eye color is black. Blue Fawn  a/a g/g r/r platinum  A/a g/g r/r ticked powdery blue and light brown with red eyes carries black [a] Blue Fawn color standards- RatsPacNW: This coloring is similar to a blue agouti but with ruby eyes.  The color intensity is lighter.  A/A g/g r/r ticked powdery blue and light brown with red eyes Blue Fawn color standards- RatsPacNW: This coloring is similar to a blue agouti but with ruby eyes.  The color intensity is lighter.  Silver Agouti  a/a g/g p/p silver  A/a g/g p/p ticked pale blue with pink eyes carries black [a]  A/A g/g p/p ticked pale blue with pink eyes  Russian Silver Agouti a/a d/d g/g russian silver   A/a d/d g/g ticked light blue, grey and fawn with black eyes carries black [a]  A/A d/d g/g ticked light blue, grey and fawn with black eyes  Russian Blue Agouti  a/a d/d russian blue  A/a d/d ticked smokey blue and orange brown with black eyes carries black [a] Russian Blue Agouti color standards- RatsPacNW: Dark gray with orange/tan ticking, may have dark guard hairs.  Eyes black. AFRMA- Color is dark steel blue at the base of the hair with a fawn band on top. Coat is evenly ticked with dark blue guard hairs. Belly color will be silvery blue. Eye color is black.  A/A d/d ticked smokey blue and brown Russian Blue color standards- RatsPacNW: Dark gray with orange/tan ticking, may have dark guard hairs.  Eyes black. AFRMA- Color is dark steel blue at the base of the hair with a fawn band on top. Coat is evenly ticked with dark blue guard hairs. Belly color will be silvery blue. Eye color is black.  Russian Blue Fawn  a/a d/d r/r blue beige  A/a d/d r/r ticked lightened grey and fawn with red carries black [a]  A/A d/d r/r ticked lightened grey and fawn with red  Cinnamon  a/a m/m mink  A/a m/m ticked orange red color with black eyes carries black [a] Cinnamon color standards- RatsPacNW: Agouti version of mink.  A warm, deep red-brown color with deep slate undercoat.  Eyes black. AFRMA: Color is similar to agouti, except the color is a warm russet brown, with medium slate at the base of the hair. Coat is evenly ticked with chocolate. Belly color to be as agouti, but of a lighter shade. Eye color is ruby or black.   A/A m/m Ticked orange red color with black eyes Cinnamon color standards- RatsPacNW: Agouti version of mink.  A warm, deep red-brown color with deep slate undercoat.  Eyes black. AFRMA: Color is similar to agouti, except the color is a warm russet brown, with medium slate at the base of the hair. Coat is evenly ticked with chocolate. Belly color to be as agouti, but of a lighter shade. Eye color is ruby or black.  Aussie Cinnamon        Havana Agouti a/a m/m R/r lightened mink with garnet color eyes  A/a m/m R/r ticked orangish color with deep red eyes carries black [a] Havana Agouti color standards- RatsPacNW: A lighter version of cinnamon.  Has dark ruby eyes.  A/A m/m R/r ticked orangish color with deep red eyes Havana Agouti color standards- RatsPacNW: A lighter version of cinnamon.  Has dark ruby eyes.  Cinnamon Pearl  a/a m/m Pe/pe pearl  A/a m/m Pe/pe pearly cream with orange ticking - black eyes carries black [a] Cinnamon Pearl color standards- RatsPacNW: Pale fawn color with a cream undercoat and blue center on hair shaft.  Silver guard hairs and eyes black. AFRMA: Coat to consist of three bands of color from the base up – cream, blue, orange, with silver guard hairs, to give an overall golden appearance with a silver sheen. Belly color pale silver gray. Eyes black.  A/A m/m Pe/pe pearly cream with orange ticking - black eyes Cinnamon Pearl color standards- RatsPacNW: Pale fawn color with a cream undercoat and blue center on hair shaft.  Silver guard hairs and eyes black. AFRMA: Coat to consist of three bands of color from the base up – cream, blue, orange, with silver guard hairs, to give an overall golden appearance with a silver sheen. Belly color pale silver gray. Eyes black.  Cinnamon Pearl Merle  a/a m/m Pe/pe with merling pearl merle  A/a m/m Pe/pe with merling pearly cream with orange ticking and dark splotches/spots through out coat - black eyes carries black [a]  A/a m/m Pe/pe with merling pearly cream with orange ticking and dark splotches/spots through out coat - black eyes  Cinnamon (Chocolate Based)  a/a b/b chocolate  A/a b/b ticked orange red color with black eyes carries black [a]  A/A b/b ticked orange red color with black eyes  Coffee Agouti  a/a b/b m/m coffee  A/a b/b m/m carries black [a]  A/A b/b m/m  Albino  a/a c/c Albino Albino color standards- RatsPacNW: all white, no spotting, pink eyes   A/a c/c pure white rat with pink eyes Albino color standards- RatsPacNW: all white, no spotting, pink eyes. AFRMA: Color is a pure clean white, free from ivory, cream, or beige tint. Eye color is red.   A/A c/c pure white rat with pink eyes Albino color standards- RatsPacNW: all white, no spotting, pink eyes. AFRMA: Color is a pure clean white, free from ivory, cream, or beige tint. Eye color is red.  Pink Eyed White (PEW) PEW Albino color standards- RatsPacNW: all white, no spotting, pink eyes any combination of three or more recessive ditutes will cause excessive diluting resulting in a white rat with pink eyes. These rats look like albinos, but have a different genetic makeup. PEW color standards- RatsPacNW: all white, no spotting, pink eyes. AFRMA: Color is a pure clean white, free from ivory, cream, or beige tint. Eye color is red. any combination of three or more recessive ditutes will cause excessive diluting resulting in a white rat with pink eyes. These rats look like albinos, but have a different genetic makeup. PEW color standards- RatsPacNW: all white, no spotting, pink eyes AFRMA: Color is a pure clean white, free from ivory, cream, or beige tint. Eye color is red.