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Primers are 1) chemically synthesised ...

Primers are
1) chemically synthesised oligonucleotides that are complementary to the regions of DNA
2) chemically synthesised oligonucleotides that are not complementary to the regions of DNA
3) chemically synthesised, autonomously replicating circular DNA molecules
4) specific sequences present on recombinant DNA

A

1) chemically synthesised oligonucleotides that are complementary to the regions of DNA

B

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

C

3) chemically synthesised, autonomously replicating circular DNA molecules

D

4) specific sequences present on recombinant DNA

Text Solution

Verified by Experts

The correct Answer is:
A
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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