2. Comparative biochemistry is the study of similarities and differences in _______ among organisms.
A. development
B. homologous structures
C. DNA sequences
D. vestigial structures
My guess is DNA sequences,
C. DNA sequences. Comparative biochemistry is used to study the similarities and differences between living organisms. Different organism posses DNA which are made up of similar elements. Comparative biochemistry study will reveal how thes molecules differ in expression.