Primers are...

Primers are

chemically synthesised oligonucleotides that are complementary to the regions of DNA

chemically synthesised oligonucleotides that are not complementary to the regions of DNA

chemically synthesised, autonomously replicating circular DNA molecules

specific sequences present on recombinant DNA

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The correct Answer is:

Primers are small, chemically synthesised oligonucleotides that are complementary to the sequences present at 3' end of the template DNA. They hybridise to the target DNA region, one to each strand of the double helix. These primers are oriented with their ends facing each other allowing synthesis of the DNA towards one another.

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