The unequivocal proof that DNA is the genetic | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Alfred Hershey and Martha Chase $(1952)$ conducted experiments using bacteriophages,which are viruses that infect bacteria.They grew some viruses

Vedclass · Accepted Answer

Viruses

Vedclass · Answer

(A) Alfred Hershey and Martha Chase $(1952)$ conducted experiments using bacteriophages,which are viruses that infect bacteria.They grew some viruses in a medium containing radioactive phosphorus $(^{32}P)$ to label $DNA$ and others in a medium containing radioactive sulfur $(^{35}S)$ to label proteins.These viruses were allowed to infect $Escherichia$ $coli$ bacteria.After infection,the viral coats were removed from the bacteria by agitation in a blender and centrifugation.They observed that radioactive phosphorus $(^{32}P)$ was found inside the bacterial cells,indicating that $DNA$ had entered the bacteria.Conversely,radioactive sulfur $(^{35}S)$ was found only in the supernatant,indicating that proteins did not enter the bacteria.Thus,they provided unequivocal proof that $DNA$ is the genetic material.

The unequivocal proof that $DNA$ is the genetic material came from the experiments of Hershey and Chase. They worked on which of the following?

Similar Questions

Which of the following molecules was the subject of debate regarding the genetic material?

Transformation experiments using Pneumococcus bacteria led to the hypothesis that

Which enzymes were used by Avery,MacLeod,and McCarty in their experiment to determine the transforming principle?

Who revealed the biochemical nature of the transforming principle? How was it done?

What is a bacteriophage?

Vedclass Test Series

Exam Paper Generator

Online Exam Module