"Which thou wilt propagate to have it press'd With more of thine: this love that thou hast shown Doth add more grief to too much of mine own." Which is the best paraphrase of Romeo's lines?

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.