74 



COAT CHARACTERS IN GUINKA-P1GS AND RABBITS. 



In detail the matings made are as follows : 



* Expected, all short. t Expected, 3 short : i long. t Expected, i short : i long. 



EXPLANATION L. = long-haired or angora. Parentheses indicate recessive characters not visible. 



HEREDITY OF LOP-EARS. 



Some experiments are likewise in progress with the inheritance of 

 the large or lop-eared character in rabbits, but these are hardly far 

 enough advanced to make their outcome certain. The young produced 

 by a cross between two breeds having ears of different relative size 

 themselves have ears of an intermediate size. In other words, there is 

 no evidence of dominance. A second generation of young has been 

 obtained, but is not yet fully grown ; apparently they too will have ears 

 of an intermediate character. If so, we may conclude that segregation 

 as well as dominance is wanting in this case, which would seem to be 

 one of blended or non-Mendelian inheritance, similar to that of the 

 willow-hybrids studied by Wichura and that of the Hieracium hybrids 

 of Mendel ('70). 



