A single strand of nucleic acid tagged with a radioactive molecule is called

A single strand of nucleic acid tagged with a radioactive molecule is called
  1. vector
  2. selectable marker
  3. plasmid
  4. probe

Solution

Probes are 15-30 bases long radioactive labelled oligonucleotides (RNA or DNA) used to detect complementary nucleotide sequences, used for disease diagnosis, etc.

Asked in: NEET 2012 (Screening)

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