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Biology · Principles and Processes in Biotechnology

हिन्दी

What type of chemical bonds are formed between the sticky ends of DNA fragments when joined by the enzyme DNA ligase?

  1. Hydrogen bonds only
  2. Phosphodiester bonds in the sugar-phosphate backbone
  3. Glycosidic bonds
  4. Peptide bonds

Correct answer · Option 2

Phosphodiester bonds in the sugar-phosphate backbone

Explanation

DNA ligase acts on cut DNA molecules and joins their ends by forming phosphodiester bonds, while sticky ends temporarily hold together via hydrogen bonds.
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