MULTIPLE ALLELOMORPHS 



207 



(second wild type) are allelomorphs. It will be ob- 

 served here that the factor in the wild type gray 

 mouse is responsible for the appearance in each 

 hair of the three pigments, chocolate, yellow and 



d f-'- 



r y 





, \ 



c t 



^^^^ , 



Fig. 5L — Four allelomorphic characters in the silkworm: a, Chinese 

 striped yellow; b, Chinese moricaud yellow; c, Japanese normal yellow; 

 d, Chinese plain white. 



black. Gray is therefore a mosaic effect, for these 

 colors are stratified in each hair from ihv base out- 

 ward in the order above named. Tlie allelomorphic 

 factor for yellow gives rise to only one of these 



