Related by context. Frequent words. (Click for all words.) 65 sexual dimorphism 62 coevolution 61 fig. S1 61 fruitflies 60 convergent evolution 59 Scientists theorize 59 Darwin finches 59 morphologies 58 elegans 58 eukaryote 57 evolutionarily conserved 57 Fig. 1A 57 gut microbiota 57 Xenopus 57 morphologically 57 placental mammals 57 prokaryotic 56 amino acid sequences 56 morphology 56 Dictyostelium 56 theropod dinosaurs 56 protists 56 systematics 56 Supplementary Fig 56 phylogeny 56 symbiont 55 Evolutionary biologists 55 Sociobiology 55 brachiopods 55 Ventastega 55 methylation patterns 55 Indohyus 55 nucleotide sequences 55 Paranthropus 55 embryological 55 morphological 55 homologues 55 braincase 55 neural crest cells 55 flatworm 55 horned dinosaurs 55 planktonic 55 amphipods 54 Drosophila melanogaster 54 Morphological 54 homolog 54 phylogenetic tree 54 masculinization 54 gonadal 54 bryozoans 54 vertebrate animals 54 physicochemical 54 Chlamydomonas 54 glomerular 54 taxon 54 subsp 54 biogeography 54 relict 54 hydrophobicity 54 homology 54 biosignatures 54 isotope ratios 54 subfamily 54 trilobite 54 organism genome 54 zonation 53 symbionts 53 snail shells 53 nanobacteria 53 phylogenetic 53 rRNA 53 Genetic variation 53 macroevolution 53 A. afarensis 53 homologs 53 bacterial genomes 53 eukaryotic 53 bacterium Escherichia coli 53 geochemical signature 53 vertebrate 53 multicellular 53 refugia 53 prokaryotes 53 solutes 53 Diatoms 53 crocodilians 53 nucleotide sequence 53 protozoan 53 Darwinius 53 flatworms 53 mammalian genomes 53 mitochondrial genome 53 taxa 53 invertebrate animals 53 arthropod 53 Volvox 53 monozygotic twins 53 filamentous 53 protozoan parasite 53 S. cerevisiae 53 Ardipithecus ramidus