Frog mutating flat worm9/24/2023 ![]() This would allow its carrier to have directional vision, because the pigment cell shields the light from one side, so it can come through the other side. His hypothesis was that there must have been a very early evolution of a prototype eye which consisted of two cells only, one photoreceptor cell and one pigment cell. In his “Theory of the Species”, he devoted an entire chapter to difficulties with his theory, which makes it an extremely honest book. ![]() How does your discovery impact on Darwin’s evolutionary theory?ĭarwin was especially concerned about eye evolution. ![]() He has found out there is the same underlying genetic basis in the eye of all animal species and he is now aiming to apply his own discovery to fight macular eye degeneration. Professor Walter Gehring’s discovery of the Pax-6 gene, the supreme master control gene’s role in the formation of the eye, is now widely regarded as the surprising confirmation of the single origin of an organ as perfect as this, which the author of the evolutionary theory had passionately postulated but found especially hard to defend.Ĭreationists had traditionally seized on that particular soft spot in Darwin’s argument, whereas neo-Darwinists had preferred to allow for many independent evolutions of the eye instead: after all, an insect’s compound eye, which consists of many individual eyes with individual lenses, is so different from a human’s camera eye, or from a scallop’s mirror eye, that the intuitive assumption was they must have evolved separately.īut Professor Gehring, who is working at the Biozentrum of Basel University within the EU-financed “Cells into Organs” research project, believes that Darwin was absolutely right all along. ![]() He made sense of something Darwin was at pains to speculate about, but couldn’t quite argue persuasively. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |