HEREDITY IN THE PROTOZOA 



289 



Fig. 07. — Parent and immediate ofTsj^rinK in diverse strains or 

 families of Difflugia corona, to show the variation and the inheritance by 

 the progeny oi the parental diversities. (Alter Jennings.) 



individuals, and allowin.ii; their offsprin*!; to niulti|)ly, 

 forming a population. The meml^ers of such a group 

 were then measured. It was found that the charac- 

 ter at first selected was present in the offs]>ring. 

 In some cases selection ceased after a certain peculi- 



