THE DETERMINATION OF SEX 

 CRO SS 1 



219 



GAMETES 



ZYGOTES 



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

 male and female, by crossing pure grossulariata males with lacticolor 



CROSS 





GROSS.C? GRoss.d 1 LACT. 9 GROSS. 9 



(0 U) (5) (4) 



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



