Answer:
Explanation:
A gene in the DNA has both exons and introns. Exons are the coding sequences that will remain in the mature mRNA, and introns are non-coding sequences that are spliced out and are not a part of the mature mRNA.
If you hybridize genomic DNA with a mature mRNA, in a microscope you'll probably see something like the figure I'm attaching. In A you can see a schematic diagram of the mRNA-DNA hybrid; the loops are single stranded DNA containing introns, that are not present in the mRNA and therefore remain unpaired.
In figure B you can see a real image of a mRNA-DNA hybrid and its interpertation below.
The hybridization involving both DNA strands would look like a perfect pairing, because both DNA strands contain complementary sequences of exons and introns.
