Plasmid is used as a carrier (vector) because | vedclass

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(D) Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from a cell's chromosomal $DNA$.They are widely used as vectors in g

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(D) Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from a cell's chromosomal $DNA$.They are widely used as vectors in genetic engineering because they possess an origin of replication $(ori)$,which allows them to replicate independently within the host cell.Because they are circular,they lack free ends,which protects them from degradation by exonucleases.Furthermore,their ability to integrate or carry foreign $DNA$ makes them ideal for transferring genes into host organisms,including eukaryotic cells.

Column-$I$	Column-$II$
$(a)$ Ligase	$(i)$ It removes nucleotides from $DNA$ ends.
$(b)$ Endonuclease	$(ii)$ Connects parts of $DNA$.
$(c)$ Exonuclease	$(iii)$ Removes phosphates from $DNA$.
$(d)$ $DNA$ Polymerase	$(iv)$ It produces sticky ends in $DNA$.
	$(v)$ Useful for repeated amplification.

Plasmid is used as a carrier (vector) because:

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