UNIT-CHARACTERS OF CATS 



143 



yellow and black and then chiefly in the female sex. Long 

 (angora) hair is a recessive variation from normal coat in cats 

 as in rabbits and guinea-pigs. A short stumpy tail, seen in 

 the ''Manx" cat, represents an imperfectly dominant unit- 

 character variation. Homozygous dominants are tailless; 

 heterozygotes are short-tailed; normal (long) tail is recessive. 

 Polj^dactylism (the possession of extra toes) is an imperfectly 

 dominant variation. 



TABLE 17 



1. 



2. 



2a. 



3. 



4. 

 5. 



6. 



7. 

 8. 



Unit-Characters of Cats 

 Dominant Recessive 



Tabby. Not tabby (black or blue). 



Black. Blue. 



Normal (intense) pigmentation. Siamese dilution. 

 Short hair. Long hair (angora). 



Dominance Imperfect or Uncertain 



Colored all over. 



White (eyes only colored). 



YeUow. 



Tailless (Manx). 



Poly dactyl. 



Spotted with white. 



Colored all over. 



Not yellow (tabby or black). 



Long-tailed. 



Toes normal. 



