Volume 9; 2009 Research Articles Evolution and differential expression of a vertebrate vitellogenin gene cluster PMCID: PMC2632621 Molecular evolution of UCP1 and the evolutionary history of mammalian non-shivering thermogenesis PMCID: PMC2627829 Parasite resistance and the adaptive significance of sleep PMCID: PMC2631508 Comparative mitochondrial genomics within and among species of killifish PMCID: PMC2631509 Recombination in Glomus intraradices, a supposed ancient asexual arbuscular mycorrhizal fungus PMCID: PMC2630297 Molecular evolution in Panagrolaimus nematodes: origins of parthenogenesis, hermaphroditism and the Antarctic species P. davidi PMCID: PMC2632994 | ||