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The double-strands of DNA are antiparallel. What does that mean? Choose one below The N-5' to...

The double-strands of DNA are antiparallel. What does that mean? Choose one below

The N-5' to C-3' orientations run in opposite directions

. Purines line up on one strand and the pyrimidines on the other.

The C-5' to C-3' orientations run in opposite directions.

One stand of the helix turns to the right and the other turns to the left. 4

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Answer #1

Correct answer is C Option.

These properties regarding the structure of DNA was given Watson and crick . According to their structure; DNA has two strands which run antiparallel to each other which means that if a strand runs in one particular direction per say then the other strand will run in opposite direction.

The directionality of DNA is given by C-5' end where phosphate is attached and C-3' end where OH group is attached . So being antiparallel means C-5' and C-3' orientations run in opposite direction.

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