I'm applying to Molec & Cell Ph.D. programs.
Firstly, in response to original query, I concur with the other respondents in that your boss/lab PI is a good reference in your case.
I have two quick related questions:
1. Should I or should I not waive my right to examine my recommendations/letters of reference? Why or why not?
2. I have 5 references. Is it alright/recommended to have more than 3? I assume it is.
Many thanks