AVH Genetics
| AVH Genetics | ||
|---|---|---|
| Gene | Alleles | Description |
| Black | (B b) | bb - Chestnut base, BB/Bb - Black base |
| Agouti | (A+ A AT a) | Visible on black horses. AT -> seal brown, A -> bay, A+ -> wild bay |
| White | (W w) | if the horse carries the W gene, the color will be white, regardless of what other genes it carries. Lethal white is not possible on AVH |
| Gray | (G g) | A horse carrying a G gene will be gray, regardless of the other genes (except W which takes precedence) |
| Cream | (CR cr) | Cream dillution gene influences both chestnut and black horses. When present you get colors like Palomino or Buckskin. |
| Dun | (D d) | |
| Champagne | (CH ch) | |
| Flaxen | (F f) | When ff it dilutes the mane of chestnut horses (bb). (the result is a mane of a light color) |
| Dapple | (Z z) | Similar to flaxen, it works on horses with a black base (BB/Bb) |
| Patterns | ||
| The patterns are applied on the coat colors of the horse, based on the breed | ||
| Roan | (RN rn) | |
| Rabicano | (RB rb) | |
| Sooty | (ST st) | |
| Tobiano | (TO to) | |
| Overo | (O o) | |
| Splashed | (SP sp) | |
| Leopard | (LP lp) | |
| Blanket | (LK lk) | |
| White Markings | ||
| Pangare | It is a pattern present on several breeds (donkey, norwegian fjord etc) | |
| Blaze, Baldface, Coronet(1-4), Fetlock(1-4), HPastern(1-4), Pastern(1-4), Snip, Star, Strip, Sock(1-4), Stocking(1-4) For each marking there are 2 alleles that will be used for passing on to the offsprings. | ||
| Genes inheritance | ||
| This image shows how genes are passed from parents to their offsprings. For each alleles pair the foals will carry one allele from the mare and one from the stallion, so for each pair there are 3 possibilities of what a foal will have. Example1: Chestnut mare (bb) + Black stallion (Bb) -> 1 Bb and 3bb, meaning there are 25% chances for the foal to be black, and 75% to be chestnut. Example2: Chestnut mare (bb) + Black stallion (BB) -> 4Bb (the foal has one allele from the mare and one from the stallion) so all the foals will inherit Bb, therefore will have a black base color. Example3: Black mare (Bb) + Black stallion (Bb) -> 1BB / 2Bb / 1bb - This means that the foal has 75% chances to be black, and 25% to be chestnut. | ||