196 



ROSCOE R. HYDE 



TABLE 16 d 

 Truncate 9 X truncate c? 



Offspring from the reciprocal cross will be referred to as B 9 and 

 B cr' . In these experiments A 9 is tested with A o^ , B 9 with 

 B cT , A 9 with the trmicate cf , B 9 with the truncate d' , the 

 truncate 9 with A cf and the truncate 9 with B cT . In order to 

 get an exact measure of the fertihty, eggs were isolated day by 

 dsLj from each of the combinations made. The number of eggs 

 isolated each day, and the number of flies that emerged is given 

 in table 18. 



TABLE 17 



Fii generation of the inbred stock, showing the result of testing the flies in pairs; 

 compare with table 16a 



