Related by context. Frequent words. (Click for all words.) 55 placental mammals 53 photoreceptor 53 rhodopsin 53 iridescence 53 toothed whales 53 ultraviolet wavelengths 53 melanosomes 52 olfactory receptors 52 melanopsin 51 fluorescent probes 51 sexual dimorphism 51 purplish red 51 fluorescent marker 51 iridescent blue 51 reproduce asexually 51 multicellular 51 nematode worms 51 neural crest cells 51 mottled brown 51 morphologically 50 convergent evolution 50 melanogaster 50 photoreceptors 50 fluoresces 50 fluorophores 50 Drosophila melanogaster 50 otolith 50 grayish white 50 halftone 50 coloration 50 haploid 50 recessive genes 50 taste receptors 50 mantis shrimp 50 inflorescence 49 fluorescent proteins 49 unicellular 49 phytochrome 49 Flowering plants 49 visible wavelengths 49 kipunji 49 fruit fly Drosophila 49 Chlamydomonas 49 HLA genes 49 RGB LEDs 49 fluorescent molecules 49 zebra finch 49 sepals 49 mammalian brain 49 zebrafish 48 methylation patterns 48 negative refraction 48 vertebrate animals 48 amino acid sequences 48 4 chars 48 photoreceptor cells 48 ganglion cells 48 Xenopus 48 photosynthetic organisms 48 scanning electron microscopes 48 odorant receptors 48 variegation 48 chloroplasts 48 vertebrates 48 panchromatic 48 breeding plumage 48 fruitfly 48 pinhead sized 48 fluoresce 48 diapause 48 retinal ganglion cells 48 cochineal 48 simian immunodeficiency virus 48 Variegated 48 reddish hue 48 color 48 pigmentation 48 bistable 48 regrows 48 otoliths 48 wavelengths 47 plumage 47 microRNA expression 47 phoneme 47 ultracold atoms 47 fluorescence 47 morphological 47 colouration 47 Firmicutes 47 primitive organisms 47 swallowtail 47 mitochondrial genome 47 blue violet 47 photoperiod 47 mammalian species 47 autosomal 47 purplish blue 47 variegated leaves 47 blueish 47 theropods 47 plasmon