Occurrence of different systems of gametic reduplication. 



25 



marking and colour) cf, while the other (H. 60) was the offspring of 

 the cross plain yellow (lieteroz. in colour) 9 X inoricaud yellow (heteroz. 

 in marking and colour) d". The results in both families may clearly 

 account for the assumption that 3:1:1:3 coupling exists in the male 

 moricaud yellow parent. 



Lot No. 



Moricaud 

 yellow 



Moricaud 

 white 



Normal 

 yellow 



Normal 

 white 



Total 



H. 60'12 (N. 17'12 9 

 X H. 22-12 cf) . . 



Expectation .... 



17-9 



(1; 



103 



89-1 

 (5) 



.53-8 



(3) 



287 



287-0 

 (16) 



Another result obtained from two families (reared in the same lot) 

 ex plain yellow (heteroz. in colour) 9 X moricaud yellow (heteroz. in 

 both colour and marking) cf seems somewhat complex owing to the 

 presence of plain yellows which was not the case with the above examples. 



Lot No. 



Moricaud Moricaud Normal 

 yellow I white yellow 



Normal 

 white 



Plain 

 yellow 



Total 



H. 59'12 (N. 15'12 9 

 X H. 22'12 (f ) . . 



20 



If we consider, however, the plain and normal individuals together 

 and express them in a term non-moricaud-marking, the result may 

 be clearlx analj^sed on the basis of 3 : 1 : 1 : 3 coupling in the male 

 parent as shown below: 



Moricaud Moricaud Non-moricand 

 yellow , white . yellow 



Non-moricaud 

 white 



Total 



Observed 



Calculated 



234 

 223-6 



(V) 



20 

 31-9 



(1) 



157 

 159-7 



(5) 



100 



95-8 



(3) 



511 



511-0 



(16) 



