No. 573] BEDUPLICATION HYPOTHESIS 543 



the four kinds of gametes should occur in the following 

 proportions : 



ABC - fftfi 

 A Be — m 

 aBC - n 

 AbC-1 



TABLE IV 



That is, l/(m + l) of the gametes should have A and B 

 interchanged. Of these, 1/(^ + 1) should have B and C 

 also interchanged. If N represents the total number of 

 gametes, then the size of the AbC class should be repre- 

 sented by the expression 



AbC- 



(m + l)<» + l) 



Table V shows the relation between the size of this class 

 as observed and as thus calculated, in the ten experiments. 



Groups Obsei 



TWM £ 



TWR ( 



n mi;,' 

 BVgCv 

 BCvSp , 



Thus it appears that in all ten experiments Trow's 

 formula gives values for the AC series and for the AbC 



