Is the DNA double helix parallel or antiparallel, and what does this mean?
A) It is parallel, meaning that the two strands both run alongside one another.
B) It is parallel, meaning that the base pairs are parallel.
C) It is parallel, meaning that the 5′ end of one strand is positioned opposite the 5′ end of the other strand.
D) It is antiparallel, meaning that the 5′ end of one strand is positioned opposite the 3′ end of the other strand.
E) It is antiparallel, meaning that the bases are perpendicular to the backbone.

Question

Quizplus · Accepted Answer

The DNA double helix is antiparallel, which means that the 5′ end of one strand aligns with the 3′ end of the opposite strand, allowing for the complementary base pairing that is essential for DNA replication and function.

Is the DNA Double Helix Parallel or Antiparallel, and What