On the RNA World: Evidence in Favor of an Early Ribonucleopeptide World Massimo Di Giulio Pages: 571 - 578
Rapid Evolution of a Homeodomain: Evidence for Positive Selection Keith A. SuttonMiles F. Wilkinson Pages: 579 - 588
The Evolution of MHC Diversity by Segmental Duplication and Transposition of Retroelements Jerzy K. KulskiSilvana GaudieriRoger L. Dawkins Pages: 599 - 609
Unexpected Conservation of the X-Linked Color Vision Gene in Nocturnal Prosimians: Evidence from Two Bush Babies Yi-Hong ZhouDavid Hewett-EmmettWen-Hsiung Li Pages: 610 - 618
Evolutionary Relationships Among the Eukaryotic Crown Taxa Taking into Account Site-to-Site Rate Variation in 18S rRNA Yves Van de PeerRupert De Wachter Pages: 619 - 630
Characterization of Mitochondrial Small-Subunit Ribosomal RNAs from Holoparasitic Plants R. Joel DuffDaniel L. Nickrent Pages: 631 - 639
The Molecular Evolution of the Vertebrate Trypsinogens Jared C. RoachKai WangLeroy Hood Pages: 640 - 652
Deuterostomic Actin Genes and the Definition of the Chordates: cDNA Cloning and Gene Organization for Cephalochordates and Hemichordates Marc BovenschulteKlaus Weber Pages: 653 - 660
On the Origin of Protein Synthesis Factors: A Gene Duplication/Fusion Model Benoit CousineauFabrice LeclercRobert Cedergren Pages: 661 - 670
On the Evolution of the Single-Subunit RNA Polymerases Nicolas CermakianTatsuya M. IkedaRobert Cedergren Pages: 671 - 681
The Origin of Chlorarachniophyte Plastids, as Inferred from Phylogenetic Comparisons of Amino Acid Sequences of EF-Tu Ken-ichiro IshidaYing CaoYoshiaki Hara Pages: 682 - 687
Analysis of the Cluster of Ribosomal Protein Genes in the Plastid Genome of a Unicellular Red Alga Cyanidioschyzon merolae: Translocation of the str Cluster as an Early Event in the Rhodophyte-Chromophyte Lineage of Plastid Evolution Niji OhtaNaoki SatoTsuneyoshi Kuroiwa Pages: 688 - 695
Estimation of Reversible Substitution Matrices from Multiple Pairs of Sequences Lars ArvestadWilliam J. Bruno Pages: 696 - 703
