The Cellular Basis 



187 



FIG. 62. RECIPROCAL OF CROSS SHOWN IN FIG. 61. Parents, white-eyed 

 female and red-eyed male ; F , red-eyed females and white-eyed males 

 ("criss-cross inheritance") ; F, equal numbers of red-eyed females and 

 males. The distribution of the sex-chromosomes is shown as in Fig. 61. 

 (From Morgan.) 



