80 



THEORY OF EVOLUTION 



(fig. 42) gives lacticolor daughters and gros- 

 sulariata sons and these inbred give grossu- 

 lariata males and females and lacticolor males 

 and females. 



GR05SULAR1ATA 9 LACTICOLOR e? 



FIG. 41. Sex-linked inheritance in the wild moth, Abraxas 

 grossulariata (darker) and A. lacticolor. 



