And to see what we mean by a palindromic sequence of DNA, let's take a look at the following diagram. So, let's suppose we have a section, a palindromic section of our double stranded DNA. So remember, in any double stranded DNA molecule we have two single strands that run antiparallel with respect to one another. So this blue strand begins at the five N and ends at the three end. And this green strand begins at the three N and ends at the five N. That's what we mean by antiparallel. Now, we also have the base pairing between the two single strands and that's what holds the two strands together.