F. M. Durham 171 



Yellows carrying black and chocolate x chocolate : 

 Yellow Black Chocolate 



23 11 9 observed 



■21-4 10-7 10-7 calculated 



Yellows carrying black x chocolate : 



Yellow Black 



6 18 observed 



12 12 calculated 



Yellows carrying black and chocolate x black heterozygous in chocolate : 

 Yellow Black Chocolate 



Yellows heterozygous in black, chocolate and albino mated together : 

 Yellow Black Chocolate Albino 



59 27 5 30 observed 



45-3 34 11-3 30-4 calculated 



Albinos heterozygous in yellow and chocolate :< chocolate heterozygous in albino : 



In the following tables the yellows are not separated into yellows 

 and creams on account of the difficulty stated above of distinguishing 

 between them. 



Yellows heterozygous in chocolate and silver fawn mated together : 

 Yellow and Cream Cliocolate Silver fawn 



5 7 5 observed 



11-2 4 2 1-4 calculated 



Yellows heterozygous in chocolate and silver fawn x silver fawn : 

 Yellow and Cream Chocolate Silver fawn 



83 11 13 observed 



29-0 14 '5 14-5 calculated 



Yellows heterozygous in chocolate and silver fawn x chocolate heterozygous in silver 



fawn: 



YeUow 



13 



16 



Yellow heterozygous in black and albino x albino heterozygous in yellow and black : 

 Yellow Black Albino 



5 2 7 observed 



4-6 g'S 6-9 jalculated 



