LIFE SCIENCE

Detailed explanation-1: -The progeny of the phages that were labeled with radioactive phosphorus remained labeled, whereas the progeny of the phages labeled with radioactive sulfur were unlabeled. Thus, the Hershey–Chase experiment helped to confirm that DNA, not protein, is the genetic material.

Detailed explanation-2: -Hershey and Chase conducted a series of three experiments in which protein and DNA of bacteriophages were labeled with radioactive isotopes. When allowed to infect bacteria, the bacteriophage protein remained attached to the cell membrane of the phage, while phage DNA entered the bacteria.

Detailed explanation-3: -Hershey and Chase concluded that protein was not genetic material, and that DNA was genetic material. Unlike Avery’s experiments on bacterial transformations, the Hershey-Chase experiments were more widely and immediately accepted among scientists.

Detailed explanation-4: -Hershey and Chase experimented with radioactively labeled phosphorus and sulphur to determine that DNA and not protein is the genetic material.