You are repeating the Hershey-Chase expe | Class 12 Biology Chapter Molecular Basis of Inheritance, Molecular Basis of Inheritance NCERT Solutions

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Academic session 2026-27, Chapter 5 in the current curriculum.

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Molecular Basis of Inheritance. This page offers a step-by-step solution to the specific question from Exercise 0, Question 11:

You are repeating the Hershey-Chase experiment and are provided with two isotopes: 32P and 15N (in place of 35S in the original experiment). How do you expect your results to be different?

. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 11:

You are repeating the Hershey-Chase experiment and are provided with two isotopes: 32P and 15N (in place of 35S in the original experiment). How do you expect your results to be different?

Answer:

Use of 15N will be inappropriate because method of detection of 32P and 15N different (32P being a radioactive isotope while 15N is non- radioactive but is the heavier isotope of nitrogen).

Even if the 15N was radioactive isotope then its presence would have been detected, both inside the cell (15N incorporated as nitrogenous base in DNA) as well as in the supernatant, because 15N would also get incorporated in amino acids in the proteins of amino group. Hence, the use of 15N would not give any conclusive results.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Molecular Basis of Inheritance.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 11: You are repeating the Hershey-Chase experiment and are provided with two isotopes: 32P and 15N (in p....

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