4. a. Write a sequence of nucleotides on a single strand of DNA that will produce a "hairpin" structure with a 10 base pair (bp) stem and a 5 base loop. Label the 5' and 3' ends. b. Presume that this DNA is normally part of a double-stranded DNA molecule (like on a normal chromosome). Write the double stranded sequence for this region of the double stranded DNA molecule. Include both strands. Label the 5' and 3 ' ends of each strand. .