THE DETERMINATION OF SEX 

 CRO SS 1 



219 



GAMETES fflfli 



ZYGOTES 



(2) 



FIG. 68. The formation of heterozygous grossulariata individuals, both 

 male and female, by crossing pure grossulariata males with lacticolor 

 females. 



CRO SS 2. 



GRoss.d 1 GROSS.C? 

 (/) U) 



FIG. 69. The cross-breeding of heterozygous grossulariata individuals. 



LACT. 9 GROSS. 

 (5) (4) 



