How strands of DNA are named

[id64044344|*CORRECTION] not a “nonsense strand“ but “antisense strand“ The ends of a DNA molecule are called 3' and 5' ends, based on the numbering of carbon atoms in deoxyribose sugars. ... When two DNA strands assemble in a double helix, the two strands always face in opposite directions; the 5' end of one strand is paired with the 3' end of the other strand.