374 



THE WHEAT PLANT 



No. of red factors 

 in Zygote 



No. of Zygotes . 



In F 3 the segregation of the sixty-four individuals of the F 2 generation 

 should occur as follows : 



Segregation of an F 2 generation tested by Nilsson-Ehle gave in F 3 the 

 following proportional numbers : 



Constant red I 63 : i 



37 



12-3 



6-6 



White, 

 i 



which agree very closely with the expected figures. 



