which dna sequence would also work in place ofthe following bi-directional enhancer? 5' gttc 3' 3' caag 5' group of answer choices 5' gaac 3' 3' cttg 5' 5' cttg 3' 3' gaac 5' 5' caag 3' 3' gttc 5' 5' cttc 3' 3' gaag 5'