It will now be necessary to consider these results a little 

 more in detail : — (1) The plants bearing blue grains only must 

 have arisen from homozygote grains (blue x blue), in the off- 

 spring of which the dominance of blue has become so much 

 strengthened as to be effective in the case of every grain. We 

 should naturally expect to find a corresponding group of plants 

 which have arisen from heterozygote grains. Referring to the 

 table we find (2) a number of plants which produced about 50 



9(8)06 (8) 



