Question

A scientist is trying to isolate a penicillin-resistant His- bacterial mutant from a mixed population. To isolate penicillin-resistant mutants, the scientist must inoculate the parent population on plates containing ______; this approach is ______ selection.

Answer 1

Penicillin, direct

Step-by-step explanation:

this scientist has to inoculate the parent population using plates that contains penicillin in them. we call this approach the direct selection.

In the direct selection, bacteria is grown on a material that has penicillin in it. the goal is to find mutants that have resistance to penicillin. only these resistant ones would grow and then a direct identification would be done.