QUESTION OF THE DAY
A scientist is replicating human DNA in a test tube and has added intact DNA, the replisome complex, and the four deoxyribonucleoside triphosphates.
Figure- DNA Replication
To the surprise of the scientist, there was no DNA synthesized, as determined by the incorporation of radio-labeled precursors into acid-precipitable material. The scientist’s failure to synthesize DNA is most likely due to a lack of which of the following in his reaction mixture?
A. Reverse transcriptase
B. Ribonucleoside triphosphates
D. Dideoxynucleoside triphosphates
E. Sigma factor
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