Oct. 7,1918 Crosses between Dairy and Beef Breeds of Cattle 



29 



land's Poet receiving it i in 4. The only pedigrees which we have been 

 able to study have shown a fair chance for the animals to carry the 

 star. There is in this pedigree an apparent exception to the recessive 

 quality of star, as the mating of S. Boyle (star) by D. Fontaine 4th 

 (star) gave a solid-color offspring. 



Some interesting cases of the reappearance of the star after its 

 disappearance in the F^ generation may be mentioned. Taurus 

 Creamelle Hengerveld mated to No. 12, the Fi exception noted above, 

 gave as the result of this back cross a star. Likewise, when Cross- 

 bred o (solid color carrying star) is inbred to the solid-color females 

 carrying star, he gave two stars and one solid-color offspring. These F3 

 offspring would indicate a segregation of the star determiner from 

 solid color. 



MARKINGS OF THE THROAT 



In cattle the white on the neck may be divided into two classes, 

 according to the center of its occurrence. These are (i) a white area 

 on the throat and (2) an extension of the white belt of the withers into 

 an irregular white area on the crest of the neck. This last marking is 

 quite rare. In these experiments we have nothing which could be 

 called this extension, and shall therefore have no opportunity to con- 

 sider its behavior. The white spot on the throat as it appeared in the 

 parents and in the offspring is given in Table XII. 



Table XII. — Behavior of the white markings on the throat in the parental and first filial 



generations 



Sire. 



Taurus Creamelle Henger- 

 veld. 



Do 



Do. 



Kay an 



Do 



Lakeland's Poet. 



Do 



Minor crosses : 



Crossbred o. 



Do. 



Crossbred 10 



Lady Primrose's Governor 



of the Fountain. 

 Johanna Lad Manor De Kol . 

 Columbia's Fox 



Description of mating. 



Throat spot X solid color. 



Throat spot Fi solid carry- 

 ing white. 



Throat spot X Fj solid 

 color. 



Solid color X throat spot. 



Solid color X solid color . . 



Solid color X throat spot. 



Solid color X solid color . . 



Fi solid carrying throat 

 spot X solid color. 



Fi solid carrying throat 

 spot X F, solid carr>ang 

 throat spot. 



F, solid color X solid color. 



Throat spot X solid color . . 



....do 



Solid color X solid color . . 



Offspring. 



13 solid -j- 2 spot. 



1 white. 



r solid color. 



3 solid color. 



19 solid color. 



3 solid color. 



Do. 



2 solid color. 



I throat spot X 2 solid 

 color. 



I solid color. 

 Do. 



Do. 

 Do. 



The conclusion to be drawn from Table XII is that the white markings 

 of the throat are recessive. There are two cases where the behavior of 

 the Fi offspring is doubtful: Crossbreds 6 and 20 from the same dam, 



