Table 2.

Effect of overexpression of the het-s gene on the expression of the [Het-s^*] phenotype in transformants

het-s gene present on the transforming vector	Number of hygromycin resistant transformants tested	Number of het-s transformants
		With [Het-s] phenotype	With [Het-s*] phenotype
Wild type	170	2 (1.5%)	136
Chimeric, A. nidulans G3DP promoter	250	59 (29.8%)	139

The values in parentheses give the percentage of strains with the [Het-s] phenotype among transformants that contain the het-s gene. G3DP, glyceraldehyde 3-phosphate dehydrogenase.