1911] 



SHULL REVERSIBLE SEX-MUTANTS 



333 





3 | 

 I I 



Cq 



S3 S3 

 Of Of 



x> *o 



S3 S3 



c3 -- 



Of Of 



>i, 



ft? ft? 

 ^ -d 





REQUIRED 



ASSUMPTION 



led wit 

 rozygot 



ftl ft* 



WHE 



FEM 



fc* fc* 

 fc* ft* 



II 



fc, fe, 



1 

 jfs 



.2 O 



ttl fed 



ft* ft* 

 -% - 



rt d 



:|a 



s l 



ed 



coup 

 heter 



fen ft* 



fc, fc, 



ft* ft* 



