The oligonucleotides are short nucleic acid polymer, normally composed by fifty bases or less.
Frequently they are used as probes to detect complementary DNA or RNA, because they connect whit their complementary nucleic acid chain, immediately.
On PCR's the oligonucleotides are used as a primer. The connect whit target DNA in order to create a spot which will allow polymerase to attach. Therefore these molecules are responsible for many copy processes of nucleic acids.
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