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Which statement is correct about EcoRI and DNA ligase?

Answer and explanation

Correct answer: EcoRI cuts DNA at specific recognition sequences, whereas DNA ligase joins DNA fragments

EcoRI is a restriction endonuclease that cuts both DNA strands at its specific recognition sequence, usually producing sticky ends. DNA ligase joins broken DNA fragments by forming phosphodiester bonds between them. Option B reverses the functions of the two enzymes. Exam tip: remember restriction enzymes as “cutters” and ligase as a “joiner.”

Related tags

EcoriDna LigaseRestriction EnzymesRecombinant DnaBiotechnologyPrinciples Of BiotechnologyClass 11 Mcq

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