Page 1 :
bow, , oo, , Assignment-Biology, Biotechnology, Class XII, , . Identify the following: 1, , i, 5°-GAATTC-3°, 3°-CTTAAG-5*, , i, SG AATTC-3", 3-CITAA G-S°, , . How can very low concentration of bacteria or virus be detected? 1, . How is the action of exonuclease different from that of endonuclease? 1, . Expand GEAC. What is its role in Biotechnology? 2, . Name the organism from which Ti plasmid is isolated. Explain the use of, , this plasmid in biotechnology. 2, , . A recombinant DNA is formed when sticky ends of vector DNA and, , foreign DNA join. Explain how the sticky ends are formed and get joined.2, , . How infestation of Meoidegyne incognitia was prevented in tobacco plant?2, . 1) Mention the number of primers required in each cycle of polymerase, , chain Reaction (PCR). Write the role of primers and DNA polymerase in, PCR. 2, (ii) Give the characteristic feature and source organism of the DNA, polymerase used in PCR. 2, , . What is Ti plasmid? Name the organism where it is found. How does it help, , in genetic engineering? 2