A : During gel electrophoresis,the DNA fragme | vedclass

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Question

(A) $DNA$ molecules contain a sugar-phosphate backbone where the phosphate groups carry a negative charge.Due to this negative charge,$DNA$ fragments

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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

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(A) $DNA$ molecules contain a sugar-phosphate backbone where the phosphate groups carry a negative charge.Due to this negative charge,$DNA$ fragments migrate towards the positively charged electrode,which is the anode,when an electric field is applied during gel electrophoresis.Therefore,both the Assertion and the Reason are correct,and the Reason is the correct explanation for the Assertion.

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.

$A$ : During gel electrophoresis,the $DNA$ fragments move towards the anode.
$R$ : $DNA$ fragments are negatively charged molecules.

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$A$ : During gel electrophoresis,the $DNA$ fragments move towards the anode.$R$ : $DNA$ fragments are negatively charged molecules.