Mutants

Substances E and G are both required for growth in N. crassa. The pathway below indicates the biosynthetic pathway and where, in the pathway, specific mutants are blocked in the pathway.

Fill in the table below, indicating whether each intermediate will allow (+) or will not allow (-) growth when minimal media is supplemented with the intermediate.

Mutant A B C D E F G

1

2

3

4

5

6