68 



The Journal of Heredity 



REGISTERED AS RED 



Figure 5. The presence of a little white on the belly and legs indicates that this bull is 

 genetically red-and-white, but, since the former color predominates, he is registered as red. 

 His pedigree is given below. 



PEDIGREE OF DIAMOND GOODS 333014— RED 



Sire 



Dam 



Good Choice 

 227852 Roan 



Sweetheart 

 13925 Red 



Choice Good 

 186802 Roan 



Silence 2nd 

 V45-1263 Red 



Victor Allan 

 212209 Red 



Modestv 

 Red 



incorrect recording), six red-roan and 

 two red calves. No black-and-white 

 individuals appeared. As roans do not 

 appear from crossing pure black on 

 pure black, this mating indicates the 

 roan extension factor (E) was carried 

 by the white bull, and that he was also 

 heterozyous for this factor. On the 

 basis of this cross an assumption is 

 possible that the roan extension factor 



(E) is associated with white in Short- 

 Horns. 



J. Wilson" assumes that red crossed 

 on white will always produce a roan. 

 This apparently does not hold true in 

 Short-Horns. Whitehall Sultan, a fa- 

 mous white Short-Horn bull, sired inany 

 calves out of red cows which are re- 

 corded as reds. These so-called reds, 

 though, are carriers of a little white 



"Wilson, "Mendelian Characters Among Short-Horn Cattle." Sci. Proc. Row Dub. 

 Soc, 11. 



