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Following statements describe the characteristics of restriction endonucleases. Identify the incorrect statement.

Options

  1. AThe enzyme cuts DNA molecules at identified position within the DNA.
  2. BThe enzyme binds DNA at specific sites and cuts only one of the two strands.
  3. CThe enzyme cuts the sugar-phosphate backbone at specific site on each strand.
  4. DThe enzyme recognizes a specific palindromic nucleotide sequence in the DNA.

Correct answer

B. The enzyme binds DNA at specific sites and cuts only one of the two strands.

Step-by-step solution

DNA consists of two complementary strands of nucleotides that spiral around each other in a double helix. Restriction enzymes cut through both nucleotide strands, breaking the DNA into fragments. These are the endonucleases that are used in RDT or genetic engineering techniques.

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