Following is 

 Lines of Beans: 



the result of selection in the 19 Pure 



Next the different-sized seeds in each Pure Line, ar- 

 ranged in groups, were grown separately, and the progeny 

 of each size were weighed. 



The results for Line IL were as follows: 



Johannsen also tested his Pure Lines of beans for six 

 successive years and found that each Line kept its own in- 

 dividuality even when a "plus strain" was grown from the 

 largest beans and a 'minus strain" from the smallest 

 beans. 



Similar results were obtained with regard to the char- 

 acters length and breadth; no effect of selection in Pure Lines 

 could be detected. The variations were apparently caused 

 by environmental conditions. 



72 



