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I know the answer to this question but I do not know where to begin. An MCB250 student isolated DNA from E. coli and wondered if the DNA sample was...
I know the answer to this question but I do not know where to begin.
An MCB250 student isolated DNA from E. coli and wondered if the DNA sample was contaminated with polypeptides/proteins. Several possible polypeptides that can contaminate the DNA preparation are listed below. To determine if the sample was contaminated, the student analyzed the DNA sample spectrophotometrically and found that the A260/A280 value was 1.95. The student concluded that their DNA sample was not contaminated, however, one of the polypeptides listed below could still contaminate their DNA sample and produce the spectrophotometric results described above? Which one?
A. RVTYGPY
B. NWYAGKH
C. SVPECML
D. WHEQDAW
E. KRYCSHW
