E. J. Allen and E. W. Sexton 357 



Red carrying Albino x Albino carrying Med. Both spotted. 

 Ccbb X ccbb 



Unspotted Spotted Unspotted Spotted 

 Red Red Albino Albino 



Family Cross 50. Expt. 123 58 84 116 



Theory. Unspotted Albino: Spotted Albino is nearly 7 :9 which would 



require 87 : 112. 



Black carrying Albino x Black carrying Albino. Neither spotted. 

 CcBBxCcBB 



Unspotted Spotted Unspotted Spotted 



Black Black Albino Albino 



Total Cases. Expt. ... 166 12 54 20 



Theory ... 15 : 1 3:1 



3 1 



i.e 45 : 3 : 12 : 4 



Gives 180 12 48 16 



Black carrying Albino x Black carrying Bed and Albino. Neither spotted. 



CcBBxCcBb 



Unspotted Spotted Unspotted Spotted 



Black Black Albino Albino 



Total Cases. Expt. ... 145 7 31 13 



Theory as above 45 : 3 : 12 : 4 



Gives 135 9 36 12 



Black carrying Albino x Bed carrying Albino. Neither spotted. 

 CcBBxCcbb 



Unspotted Spotted Unspotted Spotted 



Black Black Albino Albino 



Family Cross 3. Expt. 305 24 71 29 



Theory as above 45 : 3 ; 12 i 4 



Gives 301 20 80 27 



Black carrying Red and Albino x Red carrying Albino. Neither spotted. 



CcBbxCcbb 



