NEET2026BiologyChapterActual
Match List I with List II regarding the methods of introducing alien DNA into host cells: List I List II A Microinjection (i) Incubation on ice followed by brief placement at 42^ C B Biolistics (ii) Direct introduction of recombinant DNA into the nucleus of an animal cell C Heat shock (iii) Bombardment of plant cells with high velocity micro-particles coated with DNA D Disarmed pathogen (iv) Transfer of recombinant D
Options
- A(A) - (iii), (B) - (ii), (C) - (i), (D) - (iv)
- B(A) - (ii), (B) - (iii), (C) - (i), (D) - (iv)
- C(A) - (ii), (B) - (iii), (C) - (iv), (D) - (i)
- D(A) - (i), (B) - (iv), (C) - (ii), (D) - (iii)
Correct answer
B. (A) - (ii), (B) - (iii), (C) - (i), (D) - (iv)
Step-by-step solution
Microinjection is a method where recombinant DNA is directly injected into the nucleus of an animal cell. Thus, A matches with (ii). Biolistics, also known as the gene gun method, is suitable for plant cells. In this method, cells are bombarded with high-velocity micro-particles of gold or tungsten coated with DNA. Thus, B matches with (iii). Heat shock is a method used to make bacterial cells competent to take up DNA. It involves incubating the cells with recombinant DNA on ice, followed by a brief placement at 42