Mollusc eye - Wikipedia
WEBThe molluscs have the widest variety of eye morphologies of any phylum, [1] and a large degree of variation in their function. Cephalopods such as octopus, squid, and cuttlefish have eyes as complex as those of vertebrates, while scallops have up to …
Molluscum Contagiosum - EyeWiki
WEBMolluscum contagiosum (MC) is a DNA virus that infects skin and mucous membranes, resulting in characteristic dome-shaped umbilicated nodules. Infection commonly produces nodules on the skin of the face, abdomen, legs, arms, neck, and genital area.
Charting Evolution’s Trajectory: Using Molluscan Eye Diversity …
WEBSep 25, 2008 · Assessing molluscan eye diversity and understanding how this diversity came about will be important to developing meaningful interpretations of evolutionary processes. This paper provides an introduction to the myriad of eye types found in molluscs, focusing on some of the more unusual structures.
Photoreception - Evolution, Light, Eyes | Britannica
WEBA gene that is associated with eye development, Pax-6 (paired box gene 6), is very similar in insects and mammals, and it also occurs in the eyes of cephalopod mollusks. Thus, the earliest metazoans had at least some of the molecules necessary for producing eyes.
The evolution of eyes: major steps. The Keeler lecture 2017: …
WEBOct 20, 2017 · Yet, even now there are ~36 phyla. Only 7 of these phyla have eyes and only 4 have image-forming eyes. Three of those 4, mollusca, arthropoda, and chordata, account for 96% of species. These...
Mollusk Eyes Reveal How Future Evolution Depends on the Past
WEBFeb 29, 2024 · The visual systems of an obscure group of mollusks provide a rare natural example of path-dependent evolution, in which a critical fork in the creatures’ past determined their evolutionary futures.
Mollusc eye - Wikiwand
WEBThe molluscs have the widest variety of eye morphologies of any phylum, and a large degree of variation in their function. Cephalopods such as octopus, squid, and cuttlefish have eyes as complex as those of vertebrates, while scallops have up to 100 simple eyes.
The genome of Nautilus pompilius illuminates eye evolution and ... - Nature
WEBMay 10, 2021 · Nautilus possesses a unique and simple pinhole eye without lens or cornea, which provides an excellent prototypical model for illuminating the evolution of the eye.
Charting Evolution’s Trajectory: Using Molluscan Eye Diversity …
WEBSep 25, 2008 · We discuss how molluscan eyes can be applied to the study of evolution by examining patterns of convergent and parallel evolution and provide several examples, including the putative convergence of...
Molluscs - SpringerLink
WEBThe molluscs show every type of eye design from the most simple of eye-cups in limpets to the fish-like lens eyes of squid and octopus, which are every bit as sophisticated as their vertebrate parallels.