Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

21. What does EcoRI signify ? How its name is derived ?

194 Views

22. Give the source of restriction enzyme, Bam HI and Kpn I.

162 Views

23. What are recognition sequences or recognition sites ?

147 Views

24. How are restriction endonuclease enzymes named ?

154 Views

25. Explain any three methods of vectorless gene transfer.

1034 Views

26. Define vector. Give the properties of a “Good Vector”.

383 Views

27. Write a note on cloning vector.

345 Views

28. What do you understand by the term selectable marker ?

224 Views

Gene Cloning involves the following steps.

1. Identification and isolation of the desired gene or DNA fragment to be cloned.

2. Insertion of the isolated gene in a suitable vector.

3. Introduction of vector into a suitable organism / host cell.

4. Selection of transformed host cells.

5. Multiplication or cloning of the introduced gene in the host organism.

429 Views

30. What is PCR? List the three main steps. Show the steps with a diagrammatic sketch.

1222 Views