Question

What could you use as a probe if the sequence of the gene of interest is not yet known?

1) A DNA probe with a random sequence
2) A DNA probe with a sequence complementary to the gene of interest
3) A DNA probe with a sequence similar to that of the gene of interest
4) A DNA probe with a sequence unrelated to the gene of interest

Answer 1

A DNA probe with a sequence complementary to the gene of interest could be used if the sequence of the gene is not yet known.

Step-by-step explanation:

A DNA probe with a sequence complementary to the gene of interest could be used if the sequence of the gene is not yet known. A DNA probe is a single-stranded DNA fragment that is complementary to part of the gene of interest. By using a complementary sequence, the DNA probe can specifically bind to the gene of interest and help in its identification.