منابع مشابه
Evolution of color vision.
Color vision is achieved by comparing the inputs from retinal photoreceptor neurons that differ in their wavelength sensitivity. Recent studies have elucidated the distribution and phylogeny of opsins, the family of light-sensitive molecules involved in this process. Interesting new findings suggest that animals have evolved a strategy to achieve specific sensitivity through the mutually exclus...
متن کاملEvolution of color and vision of butterflies.
Butterfly eyes consist of three types of ommatidia, which are more or less randomly arranged in a spatially regular lattice. The corneal nipple array and the tapetum, optical structures that many but not all butterflies share with moths, suggest that moths are ancestral to butterflies, in agreement with molecular phylogeny. A basic set of ultraviolet-, blue- and green-sensitive receptors, encou...
متن کاملMolecular evolution of color vision in vertebrates.
Visual systems of vertebrates exhibit a striking level of diversity, reflecting their adaptive responses to various color environments. The photosensitive molecules, visual pigments, can be synthesized in vitro and their absorption spectra can be determined. Comparing the amino acid sequences and absorption spectra of various visual pigments, we can identify amino acid changes that have modifie...
متن کاملMolecular evolution of bat color vision genes.
The two suborders of bats, Megachiroptera (megabats) and Microchiroptera (microbats), use different sensory modalities for perceiving their environment. Megabats are crepuscular and rely on a well-developed eyes and visual pathway, whereas microbats occupy a nocturnal niche and use acoustic orientation or echolocation more than vision as the major means of perceiving their environment. In view ...
متن کاملThe evolution of Primate color vision.
Apr i l 20 09 G eo ff re y Cl em en ts C or bi s (p ai nt in g) ; B o B el sd a le C or bi s (c hi m ps ); lu Cy r ea d in G -i kk a n d a (p ho to ill us tr at io n) To our eyes, the world is arrayed in a seemingly infinite splendor of hues, from the sunny orange of a marigold flower to the gunmetal gray of an automobile chassis, from the buoyant blue of a midwinter sky to the sparkling green ...
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ژورنال
عنوان ژورنال: Mechanisms of Development
سال: 2017
ISSN: 0925-4773
DOI: 10.1016/j.mod.2017.04.554