Question

what is leading and lagging strand???

Answer 1

here is your answer..
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leading and lagging strand are phenomena that occurs as a result of alternating current .
in a circuit with alternating current the value of voltage and current vary sinusoidally . in this types of circuits the terms lead lag or in phase are used to describe current with reference of voltage .

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Answer 2

When replication begins, the two parent DNA strands are separated. One of these is called the leading strand, and it is replicated continuously in the 3' to 5' direction. The other strand is the lagging strand, and it is replicated discontinuously in short sections.