Question

Assertion (A): In molecular diagnosis, single-stranded DNA or RNA tagged with radioactive molecule is called a probe.
Reason (R): A probe always searches and hybridizes with its complementary DNA in a clone of cells.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false.
• D. (A) is false, but (R) is true.

Hint:

Probes are key tools in molecular diagnostics for identifying specific genetic sequences.

Answer 1

The Correct Option is A

A probe is a labeled DNA or RNA strand used to identify specific sequences in molecular diagnostics. 
It hybridizes with its complementary DNA, supporting Reason (R) as the explanation for Assertion (A).