SAAS 251 Lecture Notes - Lecture 2: Tobiano, Dilution Gene, Cowlick
Document Summary
Differences between the sexes: mare feminine, refined, stallion external genitalia including testicles visible. Usually crestier neck (more arch: gelding external genitalia visible, no testicles visible. Female horse & male donkey: hinny. Horse colors: e extension gene (black here, a agouti (modifier gene) allows red to appear, 5 basic horse colors. Can fade due to the sun but is still black. Not a base color: other colors. Can be golden yellow to the color of a penny. Mane and tail will always be light. Red roan chestnut and white hair throughout body. Blue roan black and white throughout. Bay roan red and white (more white) Honey roan palomino or blonde sorrel. No white horse"s coat is caused by a recessive gene. Flaxen (yellowish) mane could mean sorrel too: color phenotypes. Skewbald any other color and white. Tobiano white along the backbone (in any pattern) Frame overo solid brown around and then white in the middle like a picture.
