74 



THEORY OF EVOLUTION 



2 whites, and not the usual 3: 1 Mendehan 

 ratio. Yet, as will be shown later, the result 

 is in entire accord with Mendel's princij^le of 



segregation. 



« 



Fa 



Fig. 35. Diagram showing a cross between a white eyed male 

 and a red eyed female of the fruit fly. Sex linked inheritance. 



