Page "Hershey–Chase experiment" Paragraph 10

The labeled progeny were then allowed to infect unlabeled bacteria.

The phage coats remain on the outside of the bacteria, while the genetic material enter.

Centrifugation allowed for the separation of the phage coats from the bacteria.

These bacteria were lysed to release phage progeny.

The progeny of the phages that were originally labeled with 32P remained labeled, while the progeny of the phages originally labeled with 35S were unlabeled.

Thus, the Hershey – Chase experiment helped confirm that DNA, not protein, is the genetic material.