154 



INHERITANCE IN GUINEA-PIGS. 



TABLE 118. 



Cross 67. Smooth (tri) X smooth (4-toe, etc.); both parents of tricolor smooths were partial 



roughs (cross 52). 



rr X rr = rr (all Sm). 



If, however, RSS, normally rough E, is ever Sm: 

 RrSS X rrss = RrSs + rrSs (1 C : 1 Sm). 



'R201 was called rough E? at birth with the note that there seemed to be a 

 trace of roughness on one hind toe. No roughness was apparent when adult and 

 she was called Sm, but nevertheless was tested by mating with a 4-toe smooth. 

 The result shows that she was, genetically at least, like a rough E. 



TABLE 119. 

 Cross 58. Rough B, C (Lima) X rough B (Lima). 



TABLE 120. 

 Cross 59. Rough A (Lima) X smooth (Lima). 



