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What happens if ligase is inactive in a ligase reaction?

Answer and explanation

Correct answer: Phosphodiester bonds will not form between DNA ends

DNA ligase joins DNA fragments by forming phosphodiester bonds in their sugar-phosphate backbones. If the ligase is inactive, these bonds cannot form, so the vector and insert cannot be permanently ligated. Complementary sticky ends may pair temporarily, but this is not a stable covalent join. Exam tip: remember that ligase seals nicks in the DNA backbone.

Related tags

Dna LigaseLigation ReactionPhosphodiester BondRecombinant DnaVector InsertLigase EnzymesPrinciples Of BiotechnologyBiotechnology

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