Related by context. Frequent words. (Click for all words.) 53 horned dinosaurs 53 placental mammals 51 genetically distinct 51 morphologically 50 convergent evolution 50 Trumpeter swans 49 canadensis 49 methylation patterns 49 H. sapiens 48 vertebrate species 48 flatworm 48 HLA genes 48 Indohyus 48 avian species 48 plesiosaurs 48 species 48 subspecies 48 amphipods 47 tundra swan 47 breeding plumage 47 phyla 47 mottled duck 47 ptarmigan 47 clades 47 autosomal 46 Ardipithecus 46 golden plover 46 nonhuman primate 46 pine marten 46 marine invertebrates 46 Mule deer 46 damselfly 46 meadowlark 46 flycatchers 46 sexual dimorphism 46 Sperm whales 45 beaked whale 45 shrikes 45 feathered dinosaurs 45 arthropod 45 mammalian species 45 microRNA expression 45 T. gondii 45 hooded mergansers 45 reproduce asexually 45 subpopulations 45 eiders 45 northern spotted owls 45 Sage grouse 45 oystercatcher 45 zebra finch 44 pileated woodpecker 44 sandpipers 44 cottontail rabbits 44 curlew 44 amino acid sequences 44 MHC genes 44 erectus 44 unalike 44 Sea otters 44 Chlamydia pneumoniae 44 prevalences 44 damselflies 44 marten 44 swine origin 43 prokaryotes 43 H#N# subtype 43 theropod 43 reproductively 43 pygmy rabbits 43 Irrawaddy dolphin 43 Greater Yellowstone Ecosystem 43 skink 43 tule elk 43 genetically identical 43 toothed whales 43 montane 43 keystone species 43 pronghorns 43 bobolinks 43 baleen whale 43 mottled brown 43 monkeys apes 43 taxa 43 biologically 43 unicellular 43 infects humans 43 red shouldered hawks 43 greenish brown 43 tyrannosaur 42 intersexed 42 Chronic wasting disease 42 sporadic ALS 42 saiga 42 Sandhill cranes 42 morphologies 42 homologs 42 voracious predators 42 karyotype 42 Florida panthers 42 hunter gatherer societies