Question

DNA or RNA segment tagged with a radioactive
molecule is called
(a) vector (b) probe
(c) clone (d) plasmid

Answer 1

Answer:

b) Probe

Explanation:

The clone is a population of genetically identical individuals normally produced asexually or by vegetative reproduction. A plasmid is an extrachromosomal small DNA molecule which can replicate independently. They are mostly found in bacteria but are also present in archaea and eukaryotic organisms. An engineered DNA molecule that can serve to carry foreign genetic material into another cell to facilitate the expression of the foreign gene, for example, plasmids, cosmids, and artificial chromosomes. A probe is a radiolabeled single-stranded DNA/ RNA fragment used to search for a gene of interest or other DNA sequence. For the purpose, the base sequence of the probe is complementary to the target sequence to facilitate its base pairing with the target gene.

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Answer 2

Explanation:

b) Probe

Probe Because

Probe are short (20-25 nucleotides) single-stranded radiolabeled sequence complementary to a target sequence.

- wherein

Are used is Southern Blotting.

and

Southern Blotting -

This technique is developed by Edward Southern, in which DNA fragments from agarose gel are transfered to nylon membrane and then hybridization with a radio labeled probe.

- wherein

This technique is used for DNA only.