Which of the following is correct about using DNA sequences or amino acid sequences of proteins for constructing or evaluating phylogenies?
1) DNA sequences can be used to determine the evolutionary relationships between different species.
2) Amino acid sequences of proteins can be used to determine the evolutionary relationships between different species.
3) Both DNA sequences and amino acid sequences of proteins can be used to determine the evolutionary relationships between different species.
4) Neither DNA sequences nor amino acid sequences of proteins can be used to determine the evolutionary relationships between different species.