1. Recombinant DNA contains DNA from
2 different sources
3 different sources
2 same sources
3 same sources
✅ The correct answer is option A.
Biotechnology MCQs
2. First restriction enzyme was isolated by
Kary Mullis
Hamilton O. Smith
Maxam Gilbert
Hamilton John
✅ The correct answer is option B.
3. A commonly used restriction enzyme is
pSC 101
pBR 322
EcoRI
All of these
✅ The correct answer is option C.
4. Natural extrachromosomal circular DNA molecules carrying genes for antibiotic resistance and fertility
Recombinant DNA
Chimaeric DNA
Lambda phage
Plasmids
✅ The correct answer is option D.
5. Which one has an antibiotic resistance gene for tetracycline and ampicillin?
pSC 101
pBR 322
pCR 322
None of these
✅ The correct answer is option B.
6. The enzyme which seals the foreign DNA into the vector is
Restriction endonuclease
DNA polymerase
DNA ligase
DNA mutase
✅ The correct answer is option C.
7. Chimaeric DNA is also known as
Recombinant DNA
Complementary DNA
Vector
Plasmid
✅ The correct answer is option A.
9. A genomic library is a collection of
Bacterial clones
Bacteriophage clones
Viral clones
Both a and b
✅ The correct answer is option D.
10. A single-stranded nucleotide sequence that will hybridize into a certain piece of DNA is
Primer
Probe
Genome
Both a & b
✅ The correct answer is option D.