Taking 1 credit P/F Graduate course?

Hello, I'd like to take a graduate seminar course in cell biology for this and the next semester, just out of interest. They are both 1 credit, and are graded as P/F. Would taking these classes look suspicious or harm my chances for matriculating into a top school?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical (MD) Source Type: forums