CHANGE IN THE BAR GENE OF DROSOPHILA 



319 



The results of these comparisons are given in table 10. Males 

 with 40 facets or less are listed as ultra-bar and those with a few 

 facets above 40 as ultra-bar +. Those that are considerably 

 above 40 are classed as high males and might have been consid- 

 ered as probably belonging to bar if no tests had been made of 

 them. Among the females are included the heterozygotes. Those 

 that agree in facet number with the heterozygotes of Fi, having 

 49 facets or less according to mating no. 357 (table 7), are 

 listed as low heterozygotes. Those that are higher than this 



U 



B 



^ 



i± 



iiiiiiiiiiiiiiiiiii-)--i- + + + 



^ 



factorial class units 



Fig. 9 Ultra-bar and bar males from heterozygous females by ultra-bar males. 

 The same material is given in table 9. 



are put down as high heterozygotes, and without further evi- 

 dence might have been supposed to have a bar instead of an 

 ultra-bar factor. 



TABLE 10 

 ^2 jrom ultra-bar X jull and full X ultra-bar 



