ALLEN. — THE HEREDITY OF COAT COLOR IN MICE. 

 TABLE P. 



121 



occurs among the albino animals as well as among those which are pig- 

 mented. It is clear that a segregation did take place among the albinos 

 with respect to the two pigmentation characters under discussion. 



The writer also has an albino mouse, an extracted recessive, which 

 appears to transmit the spotted character, but not the character giving 

 total pigmentation. The following scheme shows the pedigree of this 

 individual. The letters s and sp in connection with each animal indi- 

 cates its character, whether self or spotted, the combination s (sp) indi- 

 cating a self-colored heterozygote. 



^ bl.-wh. 1-2 b. X 9 wh. ^ wh. X 9 house mouse 



S gr. 82 9 gr. 81 ^ gr. 51 9 wh. 



s(sp} s(sp) s s 



S wh. 256 



sp or s{xp) 



9 wh. 192 



i bl.-wh. 227 9 wh. 335 



s(sp) 



9 wh. 448 

 sp 



