THEORY OF RESULTS 



209 



wliicli is the actual ratio in which these types occur 

 in the second hybrid generation from this cross. 



It may also be noted that the yellow rounds 

 occupy the top row, the left column, and the squares 



YR 



YW 



GR 



GW 



YR 



YW 



GR 



GW 



along a diagonal crossing the whole Table from the 

 right top to the left bottom corner ; and that repre- 

 sentatives of each of the four types, YR, YW, GR, 

 GW, occur in the squares lying on the other diagonal 

 of the square, namely, that crossing it from the top 

 left to the bottom, right-hand corner. 



Much more can, however, be made out from the 

 o 



