MULTIPLE ALLELOMORPHS 



163 



and in that in most cases the hybrid shows at the 

 same time the characters of each parent. Both of 

 these peculiarities occur in other cases, however, 



B 



BC 



FIG. 52. Four types, A, B, C, I, of Paratettix. Below are hybrids 

 between A and B, B and C, and B and 7. (After Nabours.) 



as in Emerson's corn for instance, although nowhere 

 perhaps so strikingly as in Paratettix. 



In any attempt to decide between the two alter- 



