Discuss Hershey and Chase experiment with suitable diagram.

Question

06 Apr 2022

Answer :

Word Count : 460

In 1952 (seven years after Avery's demonstration that genes were DNA), two geneticists: A. D. Hershey and Martha Chase, provided further proof. They worked with a DNA virus, called T2, which infects E. coli (and so is a bacteriophage). Figure 5.2.1 shows the essential elements of the infective cycle of DNA bacteriophages like T2. The virions attach to the surface of their host cell (a). The proteins of the capsid inject the DNA core into the cell (b). Once within the cell, some of the bacteriophage genes (the "early" genes) are transcribed (by the host's RNA polymerase) and translated (by the host's ribosomes, tRNA, etc.) to produce enzymes that will make many copies of the _____ __________ ________ __________ ____ _________ _________ _______ _________ __________ _________.
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