Question

What do you understand by the antiparallel arrangement of DNA strands?

Answer 1

In DNA chains, the arrangement of 2 DNA strands is never 5'to 5'or 3'to 3'. These DNA strands are arranged in such a way that one chain is from 5'to 3'direction and another is from 3'to 5'direction. So, they are never parallel to each. Thus, the head of one strand is adjacent to the tail of another.