Molecules and Evolution
نویسندگان
چکیده
منابع مشابه
Evolution of visual pigments and related molecules.
The molecular phylogenetic tree of vertebrate visual pigments, constructed on the basis of amino acid sequence identity, suggests that the visual pigments can be classified into five groups (L, ML, MS, S and Rh) and that their genes have evolved along these five gene lines. Goldfish has a UV-sensitive visual pigment (S group) localized in miniature single cone cells. Medaka has one type of rod ...
متن کاملThe Evolution of Polymorphic Compatibility Molecules
Several primitive colonial organisms distinguish self from nonself by means of polymorphic compatibility molecules bearing similarity to the major histocompatibility complex (MHC). The evolution of such polymorphisms is generally explained in terms of resistance to parasites. Ignoring parasites, I develop two mathematical models. One model is inspired by slime mold aggregation. The other is a c...
متن کاملEvolution Bringing Molecules into the Fold
Introduction though their unusual syncitium might be peculiarly conducive to such propagation, some evidence suggests When discussing organic evolution the only point of hexactinellids are the most primitive of the sponges agreement seems to be: " It happened. " Thereafter, there (Mü ller et al., 1998). With such features, sponges seem is little consensus, which at first sight must seem rather ...
متن کاملBringing Molecules Back into Molecular Evolution
Much molecular-evolution research is concerned with sequence analysis. Yet these sequences represent real, three-dimensional molecules with complex structure and function. Here I highlight a growing trend in the field to incorporate molecular structure and function into computational molecular-evolution work. I consider three focus areas: reconstruction and analysis of past evolutionary events,...
متن کاملformation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1966
ISSN: 0028-0836,1476-4687
DOI: 10.1038/210663b0