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

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

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

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.

Asked in: NEET 2019 (All India)

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