Occurrence of different systems of gametic reduplication 



a) Results from the cross ny)iy 9 XNynYJ'. 

 Three raatings yielded the following offsprings. 



17 



The numerical ratios in H. 43-1- and H. 43-2 are distinctly different from 

 each other, notw'ithstanding the male or female parents of them were 

 taken from the same fraternity respectively. In the former, H. 43-1, 

 and also in N. I'lS which belongs to a distinct pedigree, the zygotic 

 series, i.e. the gametic distribution in the heterozygous parent, is closest 

 to the ratio 1:3:3:1, while in the latter, H. 43-2, 1:2:2:1 system, 

 fits best. Either system is evidently far from a complete repulsion, but 

 is a partial of very low intensity. 



The following case is also that which may account foi- the as- 

 sumption that 1:2:2:1 reduplication between normal and yellow occurs 

 in the male parent. A moricaud white female (M. 32'12) heterozygous 

 in the marking was mated to a normal yellow male (H. 26'12) hetero- 

 zygous in both the marking and colour characters. The result was: 



Induktive Abstammungs- und Verfrbungslehrt'. XIV. 



