Genomics for Evolutionary Studies
DNA sequences have also been utilized for evolutionary studies, where phylogenetic trees could be prepared on the basis of similarities between sequences of individual genes like 5S rRNA genes, 18S rDNA genes, rbcL and several other genes. Already by 1980s, large sequence data and sophisticated computer based analytical tools had become available for this purpose for redrawing the phylogenetic tree of life. However, in most of these earlier studies, sequences of one or two genes were utilized at a time, and the sequences of individual genes like 185 rDNA and rbcLgene did not find the most parsimonious trees.


