16 



EXPERIMENTS WITH DROSOPHILA AMPELOPHILA. 



2 fc 



Table 12. 



SONS. 



B Eh 



Table 13. 



DAUGHTERS. 



C. A. =0.540. 



C. A.=0.409. 



2 ta 

 6, «=• 



Table 14. 



SONS. 



C. A. =0.765. 



Table 15. 



DAUGHTERS. 



C. A. =0.820. 



-2d 



S3 



Table 16. 



SONS. 



£« 





Table 17. 



DAUGHTERS. 



C. A. =0.672. 



C. A. =0.459. 





Table 18. 



SONS. 



C. A. =0.753. 



- — 



a B 



Table 19. 



DAUGHTERS. 



C. A. =0.808. 



sex) is also 0.78. Considering the grandparents, the average coefficient 

 of association between sons and father's father, and daughters and the 

 mother's mother (no change of sex) is 0.67, while that between sons 

 and the mother's father, and daughters and the father's mother (two 

 changes of sex) is 0.74. This result agrees with that of Blanchard 

 (1903) concerning the coat-color of horses and is not in harmony with 

 Pearson's (1900) and the writer's (1903) concerning the eye-color in man. 



