QUESTION 1 In Hershey and Chase\'s experiment, what criteria did they use to tes
ID: 196921 • Letter: Q
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QUESTION 1 In Hershey and Chase's experiment, what criteria did they use to test for the identity of the genetic material? OA. They wanted to see whether IIR strains can be transformed to IIS strains O B. They wanted to see whether there were colonies on the plate. ° C. They wanted to see which part of bacteriophages entered the bacteria O. They wanted to see whether transfection occurred. QUESTION 2 In Avery's experiment, if there were IIIS colonies still when DNase was used, but there were fewer colonies compared to to other groups (protease or RNase groups), what could have been responsible? Assume that the results from all control groups were unchanged. A. O B. The IIS strains were not killed thoroughly by heat. 0 C The precipitation did not work. OD. The DNase didn't break down all DNA in the heat killed S strains The transformation did not work.Explanation / Answer
Q1. Ans C. they wanted to see which part of the bacteriophages entered the bacteria.
Explaination:- they perfored an experiment in which they labelled radioactive S35 proteins in bacteriophage and then infected E.Coli after infection they observed that the genetic material transferred to the bacteria doesnot contain any traces of radioactive S35 . then they again carried an experiment where they radiolabelled P32 of DNA of bacteriophage and then infected bacteria after centrifugation they came to know that the labelled P32 was present in bacteria DNA this provd them that DNA is a genetic material.
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