INHERITANCE OF COAT-COLOR IN CATS 563 
It is suggested that irregularities in inheritance of blue eyes and 
deafness may be explained by correlation with white-spotting. 
Yellow is determined by a sex-linked factorial difference from 
other colors. The heterozygous female is usually yellow-spotted 
or tortoiseshell, but ranges to solid black or tabby and to solid 
yellow. It is suggested that yellow-spotting in the male de- 
pends upon extreme selection or segregation of other factors. 
Kittens resembling adult Siamese cats have been produced 
from common cats. 
Banding cleanly segregates in three different widths. It is 
probable that the factorial differences involved act as triple 
allelomorphs. 
Much-ticking, little-ticking, and black probably constitute a 
triple allelomorphic series. Intergrades occur between much- 
ticking and little-ticking. 
Ticking follows banding in its distribution. 
Black-spotting in wild Felidae and in domestic tabbies is 
explained by crossing of transverse and longitudinal bands. 
Color varieties are classified as those that ‘mimic’ other do- 
mestic animals, and those that ‘mimic’ wild species. 
