Biochemical analysis uses similarities in as evidence for evolutionary relationships.
a)dna sequences
b)bone structure
c)cellular architecture
d)homologous structures

The correct answer is (a.) DNA sequences. The biochemical analysis uses similarities in DNA sequences as evidence for evolutionary relationships. The biochemical analysis is the key component of drug discovery and research, with the use of DNA sequences; a process of determining the organized structure of nucleotides within a DNA molecule.