According to Watson and Crick's model of DNA, the DNA molecule consists of a double helix. What type of forces are responsible to keep two strands of DNA together?
Correct answer: C. Hydrogen bonding
- A. Van der Waals forces
- B. Ionic bonding
- C. Hydrogen bonding
- D. Dipole-induced dipole forces
Explanation
The bases in each complementary base pair have hydrogen bonds between them, which keeps the two strands together and stable. 'A' and 'T' have 2 hydrogen bonds between them, while 'G' and 'C' have three hydrogen bonds between them. The answer is C, as the other options do not mention hydrogen bonding.
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