Final answer:
Nuclear factor I is not derived from the phage based on experiments conducted by Hershey and Chase.
Step-by-step explanation:
The statement that nuclear factor I is derived from the phage is false.
In the experiments conducted by Alfred Hershey and Martha Chase, they labeled the DNA of the phage with radioactive phosphorus (32P) and the protein coat with radioactive sulfur (35S). They found that the 32P-labeled DNA was detected in the pellet of bacterial cells, while the 35S-labeled protein coat was found in the supernatant.
Based on these results, Hershey and Chase concluded that the genetic material of bacterial viruses was DNA, not protein. Therefore, nuclear factor I is not derived from the phage.