SEX INHERITANCE 



111 



Ch,ance combination of any sperm with any egg 

 gives eight classes in F2 which are the eight classes 

 described above. In this case the presence of 



HHXX 



HX 



Eggs HX - hX 



H 



hh XY 



HX-hX-HY-hY Sperm 



Fig. 3GC. — Cross of lionuMl to IkhiiIcss nice of shoop. (After Wood, 



phulot^raplis from I'uniiett.) 



