Answer:
19 hydrogen bonds
Explanation:
Between every thymine and adenine, there are 2 hydrogen bonds.
Between every guanine and cytosine, there are 3 hydrogen bonds.
Since there are 2 total thymines and adenines, they contribute 4 hydrogen bonds overall.
-----> 2 H bonds x 2 nucleotides = 4 H bonds
Since there are 5 total cytosines and guanines, they contribute 15 hydrogen bonds overall.
-----> 3 H bonds x 5 nucleotides = 15 H bonds
Therefore, there are 19 hydrogen bonds between the complementary strands.
