This has been a critical component in the structural systematics studies which have been the focus of research in my laboratory for several years [38], which has involved development of the XPac concept and software [39].
Some systematics studies, however, go beyond the usual boundaries of collecting data and building trees.
In many molecular systematics studies, EST projects are typically small [ 21, 27, 7].
DNA barcoding provides a definitive means of authentication and for conducting molecular systematics studies.
These two subclasses are known to be deep branching Actinobacteria from systematics studies (Pukall et al. 2010).
The results uncover an evolutionary scenario that differs, to some extent, from most previously published molecular systematics studies although it is in agreement with those who advocate that the position of M. leprae as a sister taxon to the MTBC.
Molecular systematics studies suggest that the A and D diploid species evolved separately for approximately 5 10 million years before being reunited in the same nucleus approximately 1 2 MYA [ 5].
The widespread use of ESTs in evolutionary studies and particularly in molecular systematics studies is still hindered by the lack of efficient and reliable approaches for automated ortholog predictions in ESTs.
Knowledge of species boundaries is a prerequisite for studying intraspecific population dynamics [ 33], and through several molecular systematics studies, the phylogenetic diversity of clinical fusaria has been elucidated [ 22- 24].
