Which character’s treatment of liza is the most polite and civilized?

It would be that Mrs. Higgins, Henry's mother, who dislikes her son's wild ways and takes Liza under her wing

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.