Question

Choose the correct answers from the alternatives given :
In DNA replication, the Okazaki fragments on the lagging strand are joined together by

• A. DNA ligase
• B. DNA polymerase
• C. Primase
• D. Helicase

Answer 1

The correct option is A DNA ligase

DNA ligase is an enzyme that facilitates the joining of the strands of the DNA by assisting the formation of phosphodiester bonds between two nucleotides.

DNA polymerase is an enzyme that helps in DNA replication by the formation of deoxyribonucleotides, building blocks of DNA.

Primase is an enzyme that synthesis short RNA sequences called primers that help in the initiation of DNA synthesis.

Helicase is an enzyme that helps in winding and unwinding of the double-stranded structure of the DNA.

So, the correct option is 'DNA ligase'