Which of the functional groups is not reactive but serves as a recognisable tag on the DNA molecule and alter the expression of genes in the cells?

Question

Quizplus · Accepted Answer

Methyl functional groups serve as recognisable tags on the DNA molecule and alter the expression of genes in cells but are not reactive. Amino groups can undergo reactions and are involved in the formation of peptide bonds, while carboxyl and hydroxyl groups are reactive and can participate in a variety of chemical reactions.

Which of the Functional Groups Is Not Reactive but Serves