160 



INHERITANCE IN GUINEA-PIGS. 



TABLE 136. 



Cross 75. Rough A, B (J cutleri) X rough A (| cutleri). 

 Rrss X Rrss = 3 Rss + rrss (3 A : 1 Sm). 



TABLE 137. 



Cross 76. Rough C (f cutleri) X rough C (i cutleri). 

 RSs X RSs = Rss + 2 RSs + RSS (1 A : 2 C : 1 E : ? Sm ?). 



TABLE 138. 



Cross 77. Black (BB) X agouti (pure cutleri). 

 Parents and offspring all smooth. 



TABLE 139. 



Cross 78 Black (BW) X agouti XJ, 1, i cutleri). 



Expectation : 1 Ag : 1 black : some white. 

 Parents and offspring all smooth. 



