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Question
The two strands of a DNA duplex are
The two strands of a DNA duplex are
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Solution
The correct option is C Antiparallel and complementary
The two strands of DNA duplex are antiparallel in polarity. It means the polarity of one strand is 5'→3' and of the other is 3'→5' i.e., opposite to each other. This increases the stability of the molecule by increasing the hydrogen bonds.
The two strands are complementary to each other. That is, adenine forms two hydrogen bonds with thymine from the opposite strand and vice-versa. Guanine forms three hydrogen bonds with cytosine from opposite strands and vice versa. This helps in maintaining a uniform distance between the two strands.
The two strands of DNA duplex are antiparallel in polarity. It means the polarity of one strand is 5'→3' and of the other is 3'→5' i.e., opposite to each other. This increases the stability of the molecule by increasing the hydrogen bonds.
The two strands are complementary to each other. That is, adenine forms two hydrogen bonds with thymine from the opposite strand and vice-versa. Guanine forms three hydrogen bonds with cytosine from opposite strands and vice versa. This helps in maintaining a uniform distance between the two strands.
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