Horse: Principal horse coat colours and inheritance Flashcards
1
Q
List the principle horse coat codes
A
- A
- C
- E
- G
- D
- W
- R
8.
2
Q
Horse Coat: A
A
Agouti
Distribution of black-coloured hair
3
Q
Horse Coat: E
A
Melanin
- Extension of red pigments
- Red
- Chestnut
- Sorrel (ee → Black skin with red hairs)
4
Q
Horse Coat: G
A
Exclusion of pigment from hair over time (Greying)
(Dominant)
5
Q
Horse Coat: D
A
Dilution
- Dominant
- Causes dun horse colour
6
Q
Horse Coat: W
A
White (Dominant)
- Unable to produce pigment
- (WW is embryonic: Lethal)
7
Q
Horse Coat: R
A
Roan
- Mixed dark and light
- Black
- Blue
- Bay
- Red roan
8
Q
Horse Coat: C
A
Colour
9
Q
Horse Coat: S
A
Spotting
10
Q
Horse Coat: P
A
Piebald
11
Q
Horse Coat: O
A
Overo
- Spotted
12
Q
Horse Coat: T
A
Tobiano
13
Q
Basic colours of horses are determined by…
A
W, G, E & A
14
Q
Give the basic horse colours
A
- Black
- Bay (brown)
- Chestnut
- White
- Variants: Grey/Roan
15
Q
Give the inheritance of horse colours
A
- Mendelian inheritance applies
- Roan: Intermediate/codominant inheritance