I'm having a crisis of confidence: I'm a 3rd year PhD focusing on cancer genetics. Whilst I am undoubtedly developing a deep and broad understanding of genetics, bioinformatics, somatic evolution...all that good stuff; I'm also finding that my understanding of basics is all but disappearing.
I don't use or "need" (practically speaking) a working knowledge of biochemistry or molecular biology to answer my research questions. Whilst during my undergrad I could describe cellular processes like translation, splicing, various cell signalling cascades in detail, I can barely summon the basics anymore. Since genetics, biochemistry, and molecular biology are so intimately related, I feel like drilling deep into one at the expense of the others is bad.
Is this something that other people experience? How do you find time to refresh the knowledge of areas that you 'should' know, even if you have no use for them anymore in your research?