Table of Contents
How did Hershey and Chase label proteins and DNA?
DNA contains phosphorus, but not sulfur, whereas protein contains sulfur, but not phosphorus. Therefore, when Hershey and Chase marked phages with radioactive isotopes of those elements, they placed separate, distinguishable tags on the protein and DNA parts of the phages.
What did the experiments of Hershey and Chase show?
In their experiments, Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.
How did Hershey and Chase experiment proved that DNA is the genetic material?
Complete answer: Two scientists Alfred Hershey and Martha Chase proved that DNA is a genetic material by working on bacteriophages. After doing this, they observed that the viruses which were grown in radioactive phosphorus contained radioactive DNA. There was no presence of radioactive protein.
Which of the following isotopes did Hershey and Chase use to label DNA in their experiment?
What technique did Hershey and Chase use to study the viruses in their experiments? They used radioactive isotopes of phosphorus-32 and sulfur-35 as markers so they could trace the proteins and DNA to see what they were doing to the cell.
Which of the following isotopes were used by Hershey and Chase to demonstrate that DNA and not protein was the genetic material?
Hershey and Chase experiment is based on the fact that DNA contains phosphorus and similarly sulphur is present in proteins but not in DNA. They incorporated radioactive isotope of phosphorus (32P) into phage DNA and that of sulphur (35S) into proteins of a separate phage culture.
Why did Hershey and Chase use the isotopes quizlet?
Hershey and Chase used radioactive isotopes to label a bacteriophage. In one trial, they used radioactive phosphorus- 32 to label the DNA core of the bacteriophage and in another they used radioactive sulfur- 35 to label the protein coat of the bacteriophage.
Why did Hershey and Chase use sulfur and phosphorus isotopes in their experiments?
When that cell splits, hundreds of new viruses are released. What were Hershey and Chase trying to determine in their experiments? They used radioactive isotopes of phosphorus-32 and sulfur-35 as markers so they could trace the proteins and DNA to see what they were doing to the cell.
What isotopes did Hershey and Chase experiment use?