Answer: reconstituted TMV infectivity.
- A Griffith's mouse transformation
- B the Meselson-Stahl experiment
- C the Hershey-Chase blender study
- D reconstituted TMV infectivity
Correct answer: D. reconstituted TMV infectivity
Explanation: Reconstitution experiments with tobacco mosaic virus showed that its RNA, not its protein coat, carried the infective genetic information.
Helicase unwinds the double helix at the replication fork; one new strand (leading) is synthesised continuously toward the fork, while the other (lagging) must be made in short, separate Okazaki fragments because DNA polymerase only adds nucleotides 5'→3'.
Concept context
DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.