Multiple choice

Which of the following statements is/are correct?

  1. Bacterial cells protect their own DNA from degradation by restriction endonucleases by deleting all recognition sites from the genome.
  2. The Southern blotting technique depends on similarities between the sequences of probe RNA and experimental RNA.
  3. Vectors are molecules that protect host cells from invasion by foreign DNA.

  1. Only 1

  2. Only 2

  3. Only 3

  4. 2 and 3

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Polymerase chain reaction is a molecular technique for amplification of DNA sequences between two oligonucleotide primers. The Southern blotting technique depends on similarities between the sequences of probe DNA and experimental DNA. Vectors are molecules that are able to covalently bond to and carry foreign DNA into cells.

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