DNA ligase joins 3' end of one DNA strand to the 5' end of another DNA strand.

hydroxyl

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phosphate

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nitrate

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lipid

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Solution

The correct option is B phosphate
DNA fragments are joined by using DNA ligase. DNA ligase joins 3'-hydroxyl of one DNA strand to the 5'-phosphate of another DNA strand.

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Similar questions

List-I	List-II
a. DNA Ligase	$1$ . Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$2$ . End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$3$ . Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$4$ . Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

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