Search results
Results From The WOW.Com Content Network
Human somatic variations are somatic mutations (mutations that occur in somatic cells) both at early stages of development and in adult cells. These variations can lead either to pathogenic phenotypes or not, even if their function in healthy conditions is not completely clear yet.
Somatic mutations can also be passed down to offspring in organisms that can reproduce asexually, without production of gametes. For instance, animals in the cnidarian genus Hydra can reproduce asexually through the mechanism of budding (they can also reproduce sexually). In hydra, a new bud develops directly from somatic cells of the parent ...
Somatic is also defined as relating to the wall of the body cavity, particularly as distinguished from the head, limbs, or viscera. It is also used in the term somatic nervous system , which is the portion of the vertebrate nervous system that regulates voluntary movements of the body.
Anatomical variations are categorized into three types including morphometric (size or shape), consistency (present or absent), and spatial (proximal/distal or right/left). [ 1 ] Variations are seen as normal in the sense that they are found consistently among different individuals, are mostly without symptoms, and are termed anatomical ...
Gonosomal mosaicism is a type of somatic mosaicism that occurs very early in the organisms development and thus is present within both germline and somatic cells. [1] [22] Somatic mosaicism is not generally inheritable as it does not usually affect germ cells. In the instance of gonosomal mosaicism, organisms have the potential to pass the ...
Somatic hypermutation (or SHM) is a cellular mechanism by which the immune system adapts to the new foreign elements that confront it (e.g. microbes).A major component of the process of affinity maturation, SHM diversifies B cell receptors used to recognize foreign elements and allows the immune system to adapt its response to new threats during the lifetime of an organism. [1]
This article lists anatomical variations that are not deemed inherently pathological. This list is incomplete; you can help by adding missing items. (December 2013)
Somatic evolution is the accumulation of mutations and epimutations in somatic cells (the cells of a body, as opposed to germ plasm and stem cells) during a lifetime, and the effects of those mutations and epimutations on the fitness of those cells.