Perhaps the most satisfying support for the eocyte theory has come from sequence analyses of EF-1 genes to reconstruct the tree of life. This is paraticularly true in the last several years, as more sophisticated tree reconstruction algorithms have been developed, and as new methods have been devised to correct for the variation of evolutionary rates at different nucleotide positions within a sequence. During the 1990's, many analyses of EF-1 , as well as EF-G and 16/18S rRNAs, have supported the eocyte tree, in contrast to the situation in the late 1980's. A representation of the results obtained can be seen by clicking here. In support of the eocyte theory, virtually every recent analysis of EF-1 sequence has supported the eocyte theory and rejected the archael theory.