IQII] SHULL REVERSIBLE SEX-MUTANTS 347 



hermaphrodites, they would be in reality of the same genotype as 

 their pollen parent, thus offering no exception to the general rule 

 that the male parent determines the sexual type of its male 

 offspring. 



Both of these hermaphrodites were crossed upon female 08 1 14(4), 

 already mentioned in cases IV and VII. No influence of the male 

 grandparent appears, as all of the male offspring in these two 



I T 



rt (Mutant) _/* 



I I 



~r 



tt (Mutant?) 



80 71 



FIG. 10. Model pedigree for case IX 



families were hermaphrodites. This result proves that the 2 

 hermaphrodites of 08116 were genetic hermaphrodites. One of 

 these hermaphrodites was also self-fertilized and gave a progeny 

 of a single hermaphrodite, constituting family number 09210. 

 It would be rash to draw a conclusion from a family consisting of a 

 single individual, and nothing could have been derived from it if 

 by chance that individual had been a female. The fact that it was 

 hermaphrodite instead of normal male, however, confirms the con- 

 clusion that the hermaphrodite parent was a genetic hermaphrodite 

 like its own seed parent. 



Whether these two hermaphrodites owed their hermaphrodite 

 character directly to their hermaphrodite mother, or whether it 



