Q1. Which molecule is used as a probe in Southern blotting for DNA detection?A. mRNAB. DNA probeC. tRNAD. Protein
Q2. Which vector is derived from Agrobacterium tumefaciens and is commonly used in plant genetic engineering?A. Plasmid pBR322B. Ti plasmidC. Lambda phageD. Retrovirus
Q3. Which of the following is correct regarding DNA probes in molecular diagnostics?A. DNA probes are used to cut DNA at specific sites.B. DNA probes are used to detect specific DNA sequences.C. DNA probes synthesize proteins in cells.D. DNA probes inhibit RNA synthesis in bacteria.
Q4. Which technique is based on antigen-antibody interaction for disease diagnosis?A. PCRB. ELISAC. Northern blottingD. DNA fingerprinting
Q5. Which of the following is correct about Bt toxin in pest-resistant crops?A. Bt toxin is harmful to all living organisms.B. Bt toxin is produced by Bacillus thuringiensis.C. Bt toxin is produced by plants naturally without modification.D. Bt toxin prevents viral infections in crops.
Q6. Which plant was modified using RNA interference to develop resistance against Meloidogyne incognita?A. TomatoB. TobaccoC. RiceD. Potato
Q7. Which of the following statements about tissue culture is incorrect?A. Tissue culture allows mass production of plants.B. Tissue culture requires sterile conditions.C. Tissue culture produces genetically different plants.D. Tissue culture can regenerate whole plants from a single cell.
Q8. Which of the following is incorrect about cry genes in Bt crops?A. Cry genes are derived from Bacillus thuringiensis.B. Cry genes produce proteins that kill insect larvae.C. Cry genes improve the nutritional content of crops.D. Cry genes are introduced into crops for pest resistance.
Q9. Which term refers to genetically identical individuals produced through tissue culture?A. HybridsB. SomaclonesC. TransgenicsD. Mutants
Q10. Which method is used to amplify a specific DNA segment?A. Southern blottingB. Polymerase Chain Reaction (PCR)C. MicropropagationD. Autoradiography