It is an extension gene associated with the BLACK Gene But is not a color gene itself. When present, it tells the color BLACK what to do, basically. The AGOUTI gene operates somewhat like a light switch. When it is ‘switched on’ or present, the color BLACK is pushed to the points only. This is responsible for how BLACK becomes distributed on BAYS, DUNS, and BUCKSKINS–horses with black points. When the AGOUTI gene is ‘switched off’ or not present, BLACK covers the entire coat, allowing the resulting Quarter Horse colors known as BLACK, BROWN, GRULLO, BLUE ROAN–all of which have solid BLACK as a base coat. ************************************************* THE E GENE DNA MARKERS If they have 1 (Ee) Gene than they are Heterozygous. Ee will throw either A Red Based Horse or Dark Based Horse 50%. ********************************************* If They Have 2 EE Genes Than They Are Homozygous They Are Either Bay Or Black Based They Will Only Sire Or Produce A Bay Or Black Foal ***************************************************** Than You Have The Agouti Gene Added To This If A Their A True Black Based Horse They Will Be Agouti Markers a/a And If They Are Homozygous For The Dark Gene They Will Only Have Black Based Foal. ***************************************************** More To Come On Genetics 101 From Circle P Ranch I Hope You Have Enjoyed This So Far :) |
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