Horse: Principal horse coat colours and inheritance Flashcards

1
Q

List the principle horse coat codes

A
  1. A
  2. C
  3. E
  4. G
  5. D
  6. W
  7. R
    8.
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2
Q

Horse Coat: A

A

Agouti

Distribution of black-coloured hair

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3
Q

Horse Coat: E

A

Melanin

  • Extension of red pigments
  • Red
  • Chestnut
  • Sorrel (ee → Black skin with red hairs)
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4
Q

Horse Coat: G

A

Exclusion of pigment from hair over time (Greying)

(Dominant)

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5
Q

Horse Coat: D

A

Dilution

  • Dominant
  • Causes dun horse colour
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6
Q

Horse Coat: W

A

White (Dominant)

  • Unable to produce pigment
  • (WW is embryonic: Lethal)
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7
Q

Horse Coat: R

A

Roan

  • Mixed dark and light
  • Black
  • Blue
  • Bay
  • Red roan
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8
Q

Horse Coat: C

A

Colour

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9
Q

Horse Coat: S

A

Spotting

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10
Q

Horse Coat: P

A

Piebald

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11
Q

Horse Coat: O

A

Overo

  • Spotted
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12
Q

Horse Coat: T

A

Tobiano

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13
Q

Basic colours of horses are determined by…

A

W, G, E & A

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14
Q

Give the basic horse colours

A
  • Black
  • Bay (brown)
  • Chestnut
  • White
  • Variants: Grey/Roan
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15
Q

Give the inheritance of horse colours

A
  • Mendelian inheritance applies
  • Roan: Intermediate/codominant inheritance
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16
Q

Eel stripe is seen in…

A

Dun horses

17
Q

Cremello modifier

A
  • Buckskin
  • Cremello (shown)
  • Palomino
  • Perlino