N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Not Roan. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Not Roan. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Not Roan. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

Rn/N

e/e + A/A, A/a or a/a

Chestnut/sorrel Roan

One copy of the dominant Rn allele. The colour is chestnut/sorrel roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn to its offspring.

Rn/N

E/E or E/e + A/A or A/a

Brown/bay Roan

One copy of the dominant Rn allele. The colour is brown/bay roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn to its offspring.

Rn/N

E/E or E/e + a/a

Black Roan

One copy of the dominant Rn allele. The colour is black roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn to its offspring.

Rn*/N

e/e + A/A, A/a or a/a

Chestnut/sorrel or Chestnut/sorrel Roan

One copy of the uncommon Rn* allele. The colour can be chestnut/sorrel or chestnut/sorrel roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn* to its offspring.

Rn*/N

E/E or E/e + A/A or A/a

Brown/bay or Brown/bay Roan

One copy of the uncommon Rn* allele. The colour can be brown/bay or brown/bay roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn* to its offspring.

Rn*/N

E/E or E/e + a/a

Black or Black Roan

One copy of the uncommon Rn* allele. The colour can be black or black roan, unless modified by other colour modifying genes. It can pass on either allele N or Rn* to its offspring.

Rn/Rn

e/e + A/A, A/a or a/a

Chestnut/sorrel Roan

Two copies of the dominant Rn allele. The colour is chestnut/sorrel roan, unless modified by other colour modifying genes. It can only pass on allele Rn to its offspring.

Rn/Rn

E/E or E/e + A/A or A/a

Brown/bay Roan

Two copies of the dominant Rn allele. The colour is brown/bay roan, unless modified by other colour modifying genes. It can only pass on allele Rn to its offspring.

Rn/Rn

E/E or E/e + a/a

Black Roan

Two copies of the dominant Rn allele. The colour is black roan, unless modified by other colour modifying genes. It can only pass on allele Rn to its offspring.

Rn/Rn*

e/e + A/A, A/a or a/a

Chestnut/sorrel Roan

One copy of the dominant Rn allele and one copy of the uncommon Rn* allele. The colour is chestnut/sorrel roan, unless modified by other colour modifying genes. It can pass on either allele Rn or Rn* to its offspring.

Rn/Rn*

E/E or E/e + A/A or A/a

Brown/bay Roan

One copy of the dominant Rn allele and one copy of the uncommon Rn* allele. The colour is brown/bay roan, unless modified by other colour modifying genes. It can pass on either allele Rn or Rn* to its offspring.

Rn/Rn*

E/E or E/e + a/a

Black Roan

One copy of the dominant Rn allele and one copy of the uncommon Rn* allele. The colour is black roan, unless modified by other colour modifying genes. It can pass on either allele Rn or Rn* to its offspring.

Rn*/Rn*

e/e + A/A, A/a or a/a

Chestnut/sorrel or Chestnut/sorrel Roan

Two copies of the uncommon Rn* allele. The colour can be chestnut/sorrel or chestnut/sorrel roan, unless modified by other colour modifying genes. It can only pass on allele Rn* to its offspring.

Rn*/Rn*

E/E or E/e + A/A or A/a

Brown/bay or Brown/bay Roan

Two copies of the uncommon Rn* allele. The colour can be brown/bay or brown/bay roan, unless modified by other colour modifying genes. It can only pass on allele Rn* to its offspring.

Rn*/Rn*

E/E or E/e + a/a

Black or Black Roan

Two copies of the uncommon Rn* allele. The colour can be black or black roan, unless modified by other colour modifying genes. It can only pass on allele Rn* to its offspring.

nd2/nd2

e/e + A/A, A/a or a/a

Chestnut, Sorrel. No primitive markings

Two copies of the nd2 allele. Coat colour is not diluted and primitive markings are absent. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele nd2 to its offspring.

nd2/nd2

E/E or E/e + A/A or A/a

Bay, Brown. No primitive markings

Two copies of the nd2 allele. Coat colour is not diluted and primitive markings are absent. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele nd2 to its offspring.

nd2/nd2

E/E or E/e + a/a

Black. No primitive markings

Two copies of the nd2 allele. Coat colour is not diluted and primitive markings are absent. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele nd2 to its offspring.

nd1/nd2

e/e + A/A, A/a or a/a

Chestnut, Sorrel. Primitive markings may be present

One copy of the nd1 allele and one copy of the nd2 allele. The nd1 allele is dominant over the nd2 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can pass on either allele nd1 or nd2 to its offspring.

nd1/nd2

E/E or E/e + A/A or A/a

Bay, Brown. Primitive markings may be present

One copy of the nd1 allele and one copy of the nd2 allele. The nd1 allele is dominant over the nd2 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can pass on either allele nd1 or nd2 to its offspring.

nd1/nd2

E/E or E/e + a/a

Black. Primitive markings may be present

One copy of the nd1 allele and one copy of the nd2 allele. The nd1 allele is dominant over the nd2 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can pass on either allele nd1 or nd2 to its offspring.

nd1/nd1

e/e + A/A, A/a or a/a

Chestnut, Sorrel. Primitive markings may be present

Two copies of the nd1 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can only pass on allele nd1 to its offspring.

nd1/nd1

E/E or E/e + A/A or A/a

Bay, Brown. Primitive markings may be present

Two copies of the nd1 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can only pass on allele nd1 to its offspring.

nd1/nd1

E/E or E/e + a/a

Black. Primitive markings may be present

Two copies of the nd1 allele. Coat colour is not diluted. Primitive markings may be present. The colour can be further modified by other colour modifying genes. It can only pass on allele nd1 to its offspring.

D/nd2

e/e + A/A, A/a or a/a

Red dun. With primitive markings

One copy of the dominant D allele and one copy of the nd2 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd2 to its offspring.

D/nd2

E/E or E/e + A/A or A/a

Bay dun. With primitive markings

One copy of the dominant D allele and one copy of the nd2 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd2 to its offspring.

D/nd2

E/E or E/e + a/a

Blue dun. With primitive markings

One copy of the dominant D allele and one copy of the nd2 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd2 to its offspring.

D/nd1

e/e + A/A, A/a or a/a

Red dun. With primitive markings

One copy of the dominant D allele and one copy of the nd1 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd1 to its offspring.

D/nd1

E/E or E/e + A/A or A/a

Bay dun. With primitive markings

One copy of the dominant D allele and one copy of the nd1 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd1 to its offspring.

D/nd1

E/E or E/e + a/a

Blue dun. With primitive markings

One copy of the dominant D allele and one copy of the nd1 allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can pass on either allele D or nd1 to its offspring.

D/D

e/e + A/A, A/a or a/a

Red dun. With primitive markings

Two copies of the dominant D allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can only pass on allele D to its offspring.

D/D

E/E or E/e + A/A or A/a

Bay, Classic, Zebra dun. With primitive markings

Two copies of the dominant D allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can only pass on allele D to its offspring.

D/D

E/E or E/e + a/a

Blue, Mouse dun. With primitive markings

Two copies of the dominant D allele. Coat colour is dun-diluted with primitive markings. The colour can be further modified by other colour modifying genes. It can only pass on allele D to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Not Sabino 1. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Not Sabino 1. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Not Sabino 1. The basic colour is not black modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/SB1

e/e + A/A, A/a or a/a

Chestnut/sorrel sabino

Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring.

N/SB1

E/E or E/e + A/A or A/a

Brown/bay sabino

Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring.

N/SB1

E/E or E/e + a/a

Black sabino

Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring.

SB1/SB1

e/e + A/A, A/a or a/a

Chestnut/sorrel sabino

Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring.

SB1/SB1

E/E or E/e + A/A or A/a

Brown/bay sabino

Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring.

SB1/SB1

E/E or E/e + a/a

Black sabino

Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Not Tobiano. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Not Tobiano. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Not Tobiano. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/TO

e/e + A/A, A/a or a/a

Chestnut/sorrel tobiano

One copy of the dominant TO allele. The colour is chestnut/sorrel tobiano unless modified by other colour modifying genes. It can pass on either allele N or TO to its offspring.

N/TO

E/E or E/e + A/A or A/a

Bay/brown tobiano

One copy of the dominant TO allele. The colour is bay/brown tobiano unless modified by other colour modifying genes. It can pass on either allele N or TO to its offspring.

N/TO

E/E or E/e + a/a

Black tobiano

One copy of the dominant TO allele. The colour is black tobiano unless modified by other colour modifying genes. It can pass on either allele N or TO to its offspring.

TO/TO

e/e + A/A, A/a or a/a

Chestnut/sorrel tobiano

Two copies of the dominant TO allele. The colour is chestnut/sorrel tobiano unless modified by other colour modifying genes. It can only pass on allele TO to its offspring.

TO/TO

E/E or E/e + A/A or A/a

Bay/brown tobiano

Two copies of the dominant TO allele. The colour is bay/brown tobiano unless modified by other colour modifying genes. It can only pass on allele TO to its offspring.

TO/TO

E/E or E/e + a/a

Black tobiano

Two copies of the dominant TO allele. The colour is black tobiano unless modified by other colour modifying genes. It can only pass on allele TO to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Not Dominant White. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Not Dominant White. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Not Dominant White. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/W20

e/e + A/A, A/a or a/a

Chestnut/sorrel with Dominant White pattern

Dominant White pattern. One copy of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W20 to its offspring.

N/W20

E/E or E/e + A/A or A/a

Brown/bay with Dominant White pattern

Dominant White pattern. One copy of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W20 to its offspring.

N/W20

E/E or E/e + a/a

Black with Dominant White pattern

Dominant White pattern. One copy of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W20 to its offspring.

W20/W20

e/e + A/A, A/a or a/a

Chestnut/sorrel with Dominant White pattern

Dominant White pattern. Two copies of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W20 to its offspring.

W20/W20

E/E or E/e + A/A or A/a

Brown/bay with Dominant White pattern

Dominant White pattern. Two copies of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W20 to its offspring.

W20/W20

E/E or E/e + a/a

Black with Dominant White pattern

Dominant White pattern. Two copies of the W20 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W20 to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Non-dilute. The basic colour is chestnut or sorrel unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Non-dilute. The basic colour is bay or brown unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Non-dilute. The basic colour is black unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/Cr

e/e + A/A, A/a or a/a

Palomino

Heterozygous dilute, one copy of the Cr allele. The basic coat colour chestnut/sorrel is diluted to palomino. These colours can be further modified by other colour modifying genes. It can pass on either allele N or Cr to its offspring.

N/Cr

E/E or E/e + A/A or A/a

Buckskin

Heterozygous dilute, one copy of the Cr allele. The basic coat colour bay/brown is diluted to buckskin. These colours can be further modified by other colour modifying genes. It can pass on either allele N or Cr to its offspring.

N/Cr

E/E or E/e + a/a

Smoky Black

Heterozygous dilute, one copy of the Cr allele. The basic coat colour black is diluted to Smoky Black. These colours can be further modified by other colour modifying genes. It can pass on either allele N or Cr to its offspring.

Cr/Cr

e/e + A/A, A/a or a/a

Cremello

Double dilute, two copies of the Cr allele. The basic coat colour chestnut/sorrel is diluted to Cremello. These colours can be further modified by other colour modifying genes. It can only pass on allele Cr to its offspring.

Cr/Cr

E/E or E/e + A/A or A/a

Perlino

Double dilute, two copies of the Cr allele. The basic coat colour bay/brown is diluted to Perlino. These colours can be further modified by other colour modifying genes. It can only pass on allele Cr to its offspring.

Cr/Cr

E/E or E/e + a/a

Smoky Cream

Double dilute, two copies of the Cr allele. The basic coat colour black is diluted to Smoky Cream. These colours can be further modified by other colour modifying genes. It can only pass on allele Cr to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Not Dominant White. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Not Dominant White. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Not Dominant White. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/W18

e/e + A/A, A/a or a/a

Chestnut/sorrel with Dominant White pattern

Dominant White pattern. One copy of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W18 to its offspring.

N/W18

E/E or E/e + A/A or A/a

Brown/bay with Dominant White pattern

Dominant White pattern. One copy of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W18 to its offspring.

N/W18

E/E or E/e + a/a

Black with Dominant White pattern

Dominant White pattern. One copy of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can pass on either allele N or W18 to its offspring.

W18/W18

e/e + A/A, A/a or a/a

Chestnut/sorrel with Dominant White pattern

Dominant White pattern. Two copies of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W18 to its offspring.

W18/W18

E/E or E/e + A/A or A/a

Brown/bay with Dominant White pattern

Dominant White pattern. Two copies of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W18 to its offspring.

W18/W18

E/E or E/e + a/a

Black with Dominant White pattern

Dominant White pattern. Two copies of the W18 allele. The horse will display some degree of white spotting but the specific pattern cannot be predicted, unless modified by other colour modifying genes. It can only pass on allele W18 to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Non-dilute. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Non-dilute. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Non-dilute. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/Ch

e/e + A/A, A/a or a/a

Gold Champagne

One copy of the dominant Ch allele. The basic colour chestnut/sorrel is diluted to gold champagne unless modified by other colour modifying genes. It can pass on either allele N or Ch to its offspring.

N/Ch

E/E or E/e + A/A or A/a

Amber Champagne

One copy of the dominant Ch allele. The basic colour bay/brown is diluted to amber champagne unless modified by other colour modifying genes. It can pass on either allele N or Ch to its offspring.

N/Ch

E/E or E/e + a/a

Classic Champagne

One copy of the dominant Ch allele. The basic colour black is diluted to classic champagne unless modified by other colour modifying genes. It can pass on either allele N or Ch to its offspring.

Ch/Ch

e/e + A/A, A/a or a/a

Gold Champagne

Two copies of the dominant Ch allele. The basic colour chestnut/sorrel is diluted to Gold Champagne unless modified by other colour modifying genes. It can only pass on allele Ch to its offspring.

Ch/Ch

E/E or E/e + A/A or A/a

Amber Champagne

Two copies of the dominant Ch allele. The basic colour bay/brown is diluted to amber champagne unless modified by other colour modifying genes. It can only pass on allele Ch to its offspring.

Ch/Ch

E/E or E/e + a/a

Classic Champagne

Two copies of the dominant Ch allele. The basic colour black is diluted to classic champagne unless modified by other colour modifying genes. It can only pass on allele Ch to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Non-dilute. The basic colour chestnut/sorrel is not diluted unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Non-dilute. The basic colour bay/brown is not diluted unless modified by other colour modifying genes. It can only pass on allele N to its offspring

N/N

E/E or E/e + a/a

Black

Non-dilute. The basic colour black is not diluted unless modified by other colour modifying genes. It can only pass on allele N to its offspring

N/Prl

e/e + A/A, A/a or a/a

Chestnut, Sorrel

One copy of the recessive Prl allele. The basic colour chestnut/sorrel is not diluted unless modified by other colour modifying genes. If cream dilution is also present, this results in a pseudo-double dilute. It can pass on either allele N or Prl to its offspring.

N/Prl

E/E or E/e + A/A or A/a

Bay, Brown

One copy of the recessive Prl allele. The basic colour bay/brown is not diluted unless modified by other colour modifying genes. If cream dilution is also present, this results in a pseudo-double dilute. It can pass on either allele N or Prl to its offspring.

N/Prl

E/E or E/e + a/a

Black

One copy of the recessive Prl allele. The basic colour black not diluted unless modified by other colour modifying genes. If cream dilution is also present, this results in a pseudo-double dilute. It can pass on either allele N or Prl to its offspring.

Prl/Prl

e/e + A/A, A/a or a/a

Pearl dilution

Two copies of the recessive Prl allele. The basic colour chestnut/sorrel is diluted to a pale, uniform apricot colour of body hair, mane and tail. This colour can be further modified by other colour modifying genes. It can only pass on allele Prl to its offspring.

Prl/Prl

E/E or E/e + A/A or A/a

Pearl dilution

Two copies of the recessive Prl allele. The basic colour bay/brown is diluted to lightened coat, mane and tail. This colour can be further modified by other colour modifying genes. It can only pass on allele Prl to its offspring.

Prl/Prl

E/E or E/e + a/a

Pearl dilution

Two copies of the recessive Prl allele. The basic colour black is diluted to lightened coat, mane and tail. This colour can be further modified by other colour modifying genes. It can only pass on allele Prl to its offspring.

N/N

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Non-dilute. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + A/A or A/a

Bay, Brown

Non-dilute. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/N

E/E or E/e + a/a

Black

Non-dilute. The basic colour black is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring.

N/Z

e/e + A/A, A/a or a/a

Chestnut, Sorrel

One copy of the dominant Z allele. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can pass on either allele N or Z to its offspring.

N/Z

E/E or E/e + A/A or A/a

Silver dilution on Bay or Brown

One copy of the dominant Z allele. The black pigment of bay/brown horses on lower legs is lightened and mane and tail are lightened to flaxen. The colour can be further modified by other colour modifying genes. It can pass on either allele N or Z to its offspring.

N/Z

E/E or E/e + a/a

Chocolate

One copy of the dominant Z allele. The basic colour black is diluted to chocolate with flaxen mane and tail. The colour can be further modified by other colour modifying genes. It can pass on either allele N or Z to its offspring.

Z/Z

e/e + A/A, A/a or a/a

Chestnut, Sorrel

Two copies of the dominant Z allele. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele Z to its offspring.

Z/Z

E/E or E/e + A/A or A/a

Silver dilution on Bay or Brown

Two copies of the dominant Z allele. The black pigment of bay/brown horses on lower legs is lightened and mane and tail are lightened to flaxen. The colour can be further modified by other colour modifying genes. It can only pass on allele Z to its offspring.

Z/Z

E/E or E/e + a/a

Chocolate

Two copies of the dominant Z allele. The basic colour black is diluted to chocolate with flaxen mane and tail. The colour can be further modified by other colour modifying genes. It can only pass on allele Z to its offspring.