The figure below is the diagrammatic representation of the E.coli vector pBR 322. Which one of the given options correctly identifies its certain components (s)?
1. Ori-original restriction enzyme
2. Rop-reduced osmotic pressure
3. Hind III, Eco RI-selectable markers
4. AmpR, tetiR-antibiotic resistance genes
Which of the following are used in gene cloning:
1. Lomasomes
2. Mesosomes
3. Plasmids
4. Nucleoids
In genetic engineering, a DNA segment (gene) of interest is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors:
A. | a bacterium | B. | plasmid |
C. | plasmodium | D. | bacteriophage |
Options:
1. | (A) only | 2. | (A) and (C) only |
3. | (B) and (D) only | 4. | (A), (B) and (D) only |