| DNA or RNA segment tagged with a radioactive molecule is called |
| a) | Vector | b) | Probe |
| c) | Clone | d) | Plasmid |
| (b)Probe is a defined nucleic acid molecule that can be used in molecular hybridization procedures to identify specific nucleic acid sequences that are complementary to it, by virtue of a label carried by the probe. The label may be radio active or non-radioactive. |