| 21. | Crown gall tissue |
| a. | can be cultivated in vitro in absence of bacteria |
| b. | retains tumorous properties when cultivated |
| c. | both (a) and (b) |
| d. | shows tumorous properties only in presence of bacteria |
| View Answer Report Discuss 50-50! |
|
Answer: (c).both (a) and (b)
|
| 22. | Integrated nopaline T-DNA occurs as |
| a. | single segment |
| b. | two segments |
| c. | three segments |
| d. | four segments |
| View Answer Report Discuss 50-50! |
|
Answer: (a).single segment
|
| 23. | Opines are |
| a. | amino acid derivatives found in tumor tissues |
| b. | amino acid derivatives found in normal tissues |
| c. | amino acid derivatives found in both normal as well as tumor tissues |
| d. | none of the above |
| View Answer Report Discuss 50-50! |
|
Answer: (a).amino acid derivatives found in tumor tissues
|
| 24. | T-DNA transfer and processing into plant genome requires products of which of the following genes? |
| a. | vir A,B |
| b. | vir G,C |
| c. | vir D,E |
| d. | All of these |
| View Answer Report Discuss 50-50! |
|
Answer: (d).All of these
|
| 25. | Because of large size of Ti-plasmid, intermediate vectors (IV) are developed in which T DNA has been subcloned into |
| a. | pBR 322 based plasmid vector |
| b. | pRK 2013 |
| c. | pRN 3 |
| d. | all of these |
| View Answer Report Discuss 50-50! |
|
Answer: (a).pBR 322 based plasmid vector
|