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Phenotypespecies Donax variabilis show diverse coloration and patterning in their phenotypes.A phenotype describes any observed quality of an organism, such as its morphology, development, or behavior, as opposed to its genotype - the inherited instructions it carries, which may or may not be expressed. This genotype-phenotype distinction was proposed by Wilhelm Johannsen in 1911 to make clear the difference between an organism's heredity and what that heredity produces. The distinction is similar to that proposed by August Weismann, who distinguished between germ plasm and somatic cells . A more modern version is Francis Crick's Central dogma of molecular biology.Despite its seemingly straightforward definition, the concept of the phenotype has some hidden subtleties. In the first place, most of the molecules and structures coded by the genetic material are not visible in the appearance of an organism, yet are part of the phenotype. Human blood groups are an example. Therefore, by extension, the term phenotype must include characteristics that can be made visible by some technical procedure. A further, and more radical, extension would add inherited behaviour to the phenotype.Second, the phenotype is not simply a product of the genotype, but is influenced by the environment to a greater or lesser extent . And, further, if the genotype is defined narrowly, then it must be remembered that not all heredity is carried by the nucleus. Mitochondria, for example, divide in unison with the nucleus, but transmit their own DNA directly, not via the nucleus.The phenotype is composed of traits or characteristics . Some phenotypes are controlled entirely by the individual's genes. Others are controlled by genes but are significantly affected by extragenetic or environmental factors. Almost all humans inherit the capacity to speak and understand language, but which language they learn is entirely an environmental matter. (From the Wikpedia article Phenotype.) Download PDF Image ResultsLoading...
BioPortfolio Ltd. offers e-mail and postal lists for Phenotype scientists - we have details of around 20857 individuals working on Phenotype . This page has been viewed 247 times Recent Search Terms used to find this page: clinical phenotype wikipedia | Clingenix Inc. kinase | . Browse BioPortfolio's InDepth service - alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z or by Most Publications, recently searched for, or most viewed. Search for Phenotype across BioPortfolio, or bestselling Phenotype books or recently published Phenotype books . Wikipedia excerpt, where present, licenced under the GNU Free Documentation License. Resources from the NCBI applied. Selected MeSH subject headings created and maintained by the US NLM are used in conjunction with additional keywords. 2006-2008 MeSH. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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