Related by context. Frequent words. (Click for all words.) 64 single celled organisms 64 single celled 63 symbionts 63 morphologically 62 Caenorhabditis elegans 62 multicellular organisms 61 organisms 61 placental mammals 61 prokaryotes 60 T. gondii 60 protozoan 60 unicellular 60 nematode worms 60 stickleback 60 vertebrate animals 59 multicellular 59 organism 59 crocodilians 59 gut microbes 58 platypuses 58 Indohyus 58 sea anemone 58 asexual reproduction 58 clades 58 Toxoplasma gondii 58 mammals 58 microbiota 58 feathered dinosaurs 58 marine invertebrates 58 tunicates 58 sexual dimorphism 57 taxa 57 vertebrate 57 species 57 C. elegans 57 theropod 57 phylogeny 57 hermaphroditic 57 convergent evolution 57 lineages 57 vertebrate species 57 Toxoplasma 57 single celled organism 57 mitochondrial genome 56 phyla 56 arthropod 56 mammalian 56 mycobacteria 56 Wolbachia 56 evolutionary biologists 55 humans 55 tetrapod 55 melanogaster 55 nonhuman primates 55 mammalian species 55 diatom 55 Archaea 55 amoebas 55 amino acid sequences 55 Ardipithecus 55 Neandertal 55 evolutionary adaptation 55 flagellum 55 Ardipithecus ramidus 55 sticklebacks 55 lifeforms 55 melanosomes 55 evolutionarily 55 tyrannosaur 54 subfamily 54 transgenes 54 ecological niches 54 parasitic worm 54 Homo sapiens 54 vertebrates 54 sea anemones 54 mutant strain 54 asexual 54 methanogens 54 primate evolution 54 herpes viruses 54 Homo Sapiens 54 diatoms 54 Plasmodium 54 Candida albicans 54 tetrapods 53 Tiktaalik 53 toothed whales 53 marine organisms 53 ribozyme 53 eukaryotic cells 53 motile 53 eukaryotic 53 filamentous 53 homo sapiens 53 zooxanthellae 53 microbes 53 mutant strains 53 anthropoids 53 mole rats 53 RNA viruses