In a double-stranded DNA molecule, the strands are said to be antiparallel because:
A)they wind around one another.
B)each purine of one strand pairs with a pyrimidine of another.
C)they form an uneven pair of grooves on the outside of molecule.
D)one strand runs 5' to 3' and the other 3' to 5'.

Question

Quizplus · Accepted Answer

The strands in a double-stranded DNA molecule are said to be antiparallel because one strand runs in the 5' to 3' direction while the other runs in the opposite 3' to 5' direction, essentially going in opposite directions.

In a Double-Stranded DNA Molecule, the Strands Are Said to Be