2Discuss the value of each of the following characters for usein phylogenetic inference:
identity of nucleic acids at third positions in a codontriplet,
nucleic acid sequences in eukaryotic introns,
surface proteins in viruses,
numbers of flower parts in angiosperms,
presence of alkaloids in leaf tissues of angiosperms,
diversity of hemoglobin types within an individual organism intetrapods,
presence or absence of specific recombination factors inbacteria,
relative limb length (limb length relative to body size) intetrapods
