No. 630] 



63 



Later the opportunity was offered for 

 relation of agouti (A) to the above two genes. A red- 

 eyed self carrying agouti 4 (rSA) was mated to black- 

 eyed hooded blacks (RSi,a) and the resulting offspring, 

 self agoutis (rSA-RSna), were bred back to the triple re- 

 cessives, red-eyed hooded (rrShSnaa). From this mating 

 were obtained' the animals shown in Table II. ' In this 

 case also there is no indication of linkage since all of the 

 classes are of approximately the same size. 



Table I. This has been done and is given in 

 The combined results merely give added proo 

 ductions drawn from Table I, that no link* 

 curred. 



