Direct evidence for linkage of roan and extension loci in Belgian horses.
A bay roan Brabant Belgian stallion (ERn/ ern) was bred to eight chestnut American Belgian mares (ern/ ern), producing 57 foals. Thirty foals were bay roan, 25 were chestnut, one was bay, and one was chestnut roan. The recombination rate was 0.035 +/- 0.024, indicating fairly close linkage between the roan (Rn) and extension (E) loci.
D000818:Animals; D008040:Genetic Linkage; D006736:Horses / Q000033:anatomy & histology / Q000235:genetics*; D012880:Skin Pigmentation