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  4. A probe which is a molecule used to locate specific sequences in a mixture of DNA or RNA molecules could be

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Q. A probe which is a molecule used to locate specific sequences in a mixture of $DNA$ or $RNA$ molecules could be

Biotechnology and its Applications

Solution:

A probe is a single stranded sequence of radioactively labelled DNA or RNA. It is complementary to the gene or DNA sequence of interest and helps locate the DNA sequence due to its radioactivity. So, the correct answer is 'Either RNA or DNA.'