Concept explainers
(a)
To determine: If any of the four nucleotides were omitted from the incubation mixture, will radioactivity be found in the precipitate when extracts of E.coli containing dATP, dTTP, dGTP, dCTP are labeled with αP-32.
Introduction:
Radioactive labeling is used for the analysis and tracing of the various
(b)
To determine: If there will be labeling of 32P if only labeled dTTP is added in the synthesis mixture.
Introduction:
Nucleotides present in DNA include thymine, cytosine, adenine and guanine. They form the strands after synthesis of polynucleotide chain.
(c)
To determine: If radioactivity will be formed in the precipitate when β,γ-phosphate are used instead of α-phosphate in the deoxyribonucleotides.
Introduction:
Deoxynucleotides consist of deoxyribose sugar, purine or pyrimidine ring and a phosphodiester bond formed between
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