NATURAL SELECTION 



131 



C, Dj E) . The general population is a composite of 

 all the groups. 



That his conclusion is correct is shown by rearing 



A-E 



Fig. 62. — Pure lines of beans. 

 The lower figure (A-E) gives 

 the general population, the fig- 

 ures above give the pure lines 

 within the population. (After 

 Johannsen.) 



