u 



Tanaka. 



naturally lead one to the belief that a coiiiplete repulsion between iVand Y 

 exists in diheterozj-gous normal yellows, into which ^V and V were brought 

 about by different parents. 



Further data were obtained, after the previous publication, from 

 the cross jSlyNy 9 X nYnY cf and its reciprocal, the parental forms in 

 both cases being taken from the strains pure bred for generations or 

 the families w^hose history was exactly known. Fis were uniform normal 

 vellow which gave the following Fo individuals. 



Lot No. 



Normal 

 yellow 



Normal 

 white 



Plain 

 yellow 



Total 



Fj ex Aojiku 



H. 12-1'12 . . . 

 H. 12-212 . . . 

 H. 12-3' 12 . . . 

 H. 12-4'12 . . . 

 H. 12-512 . . . 

 (7 families together) 



178 

 136 

 38 

 159 

 1057 



plain yellow jf 



82 

 83 



16 I 



63 , 



539 i 



87 

 84 

 11 

 64 

 487 



347 



303 



65 



286 



2083 



Total 



Fj ex plain yellow 9 X Aojiku cj^ 



H. 28 12 



F, ex Aojiku ^ 



plaiu yellow (j^ 



■M) 43 



H. 30-1 12 

 H. 30-2' 12 

 H. .30-3'12 



Fj ex plain yellow 9 X Aojiku ^ 



182 



249 



92 



Total 



79 

 125 



57 



73 

 112 



58 



334 

 486 

 207 



1027 



