Question Detail
Question
In DNA, the two strands are held together primarily by:
Correct Answer
Option C is the correct answer.
Detailed Explanation
The two antiparallel strands of the DNA double helix are held together by hydrogen bonds between complementary nitrogenous base pairs: adenine-thymine (two bonds) and guanine-cytosine (three bonds).
Hint
These are relatively weak, specific bonds that allow for strand separation during replication and transcription.