28 



EXPERIMENTS WITH DROSOPHILA AMPELOPHILA. 



Table 30. — Percentage of abnormal offspring in 13 matings 

 of Ns (ex. Ns X A$) X A? (ex. Ns X A?). 



FEMALES. 



Table 31. —Percentage of abnormal offspring in 9 matings of 

 Ns (ex. AS X As) X A? (ex. As X A$). 



FEMALES 



