THE 'bar eye' mutant OF DROSOPHILA 



519 



TABLE 2 



Plus selection 



Line B 



selections are 93.9, 89.6 and 84.8 and in minus line F, 94.6, 89.8 

 and 84.7. 



As a result of the three minus and the three plus selections the 

 mean value of the individuals in the plus lines (139.5) is greater 

 than the highest extreme individual of the three minus hues 



