Occurrence of different systems of gametic reduplication. 



23 



derived from the cross between moricaud yellow (homozygous) and nor- 

 mal white (homozygous), Fi of which being uniform moricaud yellow. 



F2 ex Aojiku 9 X moricaud yellow cT. 



F2 ex moricaud yellow 9 X Aojiku cf . 



The results shown above appear, at first sight, to point to the 

 supposition that a partial coupling on the system 7:1:1:7 occurs bet- 

 ween moricaud and yellow characters. The calculated numbers on such 

 assumption are contrasted below to the observed: 



