Question

A piece of nucleic acid used to find, a gene by forming a hybrid with it is called a

• A. probe
• B. retrovirus
• C. vector
• D. restriction sequence

Answer 1

The correct option is A probe

A stretch of DNA or RNA sequence that can detect a target sequence in the genome is called a probe. Probes are always single-stranded and can be made of DNA or RNA. If a probe is added to a mixture of different pieces of DNA ( e.g, restriction fragments), it will anneal (base pair) with any lengths of DNA containing the complementary sequence.

So, the correct option is 'probe'.