Fig. 13-2 Colonies of two diplophase and four haplophase 

 cultures grown on agar showing differences in size and mor- 

 phology of colonies. The four haplophase cultures arose from 

 the four spores of a single ascus and correspond to the cul- 

 tures A, B, C, and D shown in Fig. 13-1. 



13-3 



