What did the girls discover in the furniture store that made espernanza feel stupid?

The girls discovered a music box in the furniture store. Esperanza thought that the music box belonged to her since she did have one in the past.

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.