Express

expressivity
the degree to which a particular genotype is expressed in the phenotype.
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Expressed Human Genome Sequences Database
The National Center for Genome Resources and the South African National Bioinformatics Institute are collaborating on the Sequence Tag Alignment and Consensus Knowledgebase, or STACK.
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The degree to which a particular genotype is expressed in the phenotype. The degree of expression of a genetically controlled trait.
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 ...
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Expressed sequence tag
An expressed sequence tag or EST is a short sub-sequence of a transcribed protein-coding or non-protein coding DNA sequence.
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The expression of genes involved in the inflammatory response is controlled both transcriptionally and post-transcriptionally.
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Gene expression in eukaryotes is controlled by a variety of mechanisms that range from those that prevent transcription to those that prevent expression after the protein has been produced.
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Stages of gene expression that are regulated
Any step of gene expression may be modulated, from the DNA-RNA transcription step to post-translational modification of a protein. Following is a list of stages where gene expression is regulated: ...
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Most genes are expressed as proteins. The synthesis within a cell of a particular protein can be detected by antibodies able to bind to that protein.
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Dr. Richard Morgan, of the National Human Genome Research Institute's Clinical Gene Therapy Branch, defines gene expression.
illustrated:
View illustration ...
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Expressivity
Term coined by Voigt (1926) for the phenotypic expression of a penetrant gene or genotype differs in type or degree from slight to intermediate to complete.
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Expressing eukaryotic genes in bacteria presents other problems. After proteins are assembled in eukaryotic cells they are often modified.
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Expression vector
A cloning vector designed so that a foreign gene inserted into the vector will be expressed in the host organism. The inserted DNA is often placed under the control of a strong, regulatable promoter (e.g.
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expression In relation to genes, the phenotypic manifestation of a trait. Expression may be age-dependent (e.g., Huntington disease) or affected by environmental factors (e.g., dark fur on Siamese cats).
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Expression of molecular genes
For various reasons, the relationship between DNA strand and a phenotype trait is not direct.
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EXPRESSION VECTOR - A plasmid or phage designed for production of a polypeptide from inserted foreign DNA under specific controls. Often an inducer is used.
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expression vector
A vector that allows a DNA sequence cloned into it to be transcribed when the vector is introduced into a cell.
expressivity ...
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Express. To translate a gene's message into a molecular product.
Expression library. (See Library.)
F ...
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Expression clone: This is a clone (plasmid in a bacteria, or maybe a l phage in bacteria) which is designed to produce a protein from the DNA insert.
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Expression: To "express" a gene is to cause it to function. A gene which encodes a protein will, when expressed, be transcribed and translated to produce that protein.
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Expressivity
: The range of phenotypes resulting from a given genotype (cystic fibrosis, for example, may have a variable degree of severity). This is different from
pleiotropy ...
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Gene expression: The process by which genes express themselves: in the cell, ge ne expression results in the manufacture of proteins that determine an organism's characteristics.
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phenotype The expression that results from an interaction of one or more gene pairs and the environment.
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phenotype: the expression of genes and the physical characteristics that result.
phloem: structures of vascular plants that transport sugars and other nutrients from the leaves to the other parts of the plant.
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Beak: Colloquial expression for the protruding mouthpart structures of a sucking insect (= proboscis).
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Sigma. Parameter expressing the seawater density: and equal to 1 minus the density of seawater, measured at a given temperature and at a pressure of l atmosphere ...
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pH. A value used to express relative acidity or alkalinity.
phenoxy herbicides. A group of herbicides derived from phenoxy-acetic acid, including 2,4-D, 2,4,5-T, 2,4-DB, MCPA and silvex.
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A normal gene that when mutated or improperly expressed contributes to the development of cancer. (See Oncogene.) Centers of origin. Usually the location in the world where the oldest cultivation of a particular crop has been identified.
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Contiguous genes -- genes physically close on a chromosome that when acting together express a phenotype.
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partition coefficient A constant that expresses the ratio in which a given solute will be partitioned or distributed between two given immiscible liquids at equilibrium, or between a solvent and adsorbant.
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Has also been used in expression studies. Yeast artificial chromosomes (YACs) are the most commonly used form.
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One of several regional or continental expressions of a given biome. Function: refers to action, how something works.
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I just mean that each photoreceptor should express only one opsin.) The advantage that this provides comes in the form of visual contrast.
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In G inversion the orientation of Mu phage G segment determines tail fibre expression and thus host range (E.coli or Citrobacter). A similar variation in tail fiber expression is due to Cin in bacteriophage P.
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A technique to monitor gene expression in thousands of genes. Thousands of probe DNAs are spotted or synthesized on microscope slides. Sample RNAs are labeled with fluorescent dyes.
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Definition: An organism's expressed physical traits.
Related Resources: Chromosomes and Gender
Chromosomes are long, stringy aggregates of genes that carry heredity information. Gender is determined by the presence or absence of certain chromosomes.
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enhancer - DNA sequence in a gene that influences the gene's expression by increasing or decreasing its rate of RNA synthesis (via effects on binding and transcription of the basal transcription apparatus including RNA Polymerase); ...
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An allele that is not expressed in the heterozygous condition. Also the phenotype of the homozygote of a recessive allele.
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Multiple copies of tubulin genes are present (and are expressed) in most eukaryotic cells studied so far. The different tubulin isoforms seem, however, to be functionally equivalent.
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Divergence in structure and function of cells as they become specialized during a multicellular organism's development; depends on the control of gene expression (cell differentiation).
Covered in Lab 14 Gametogenesis and Development ...
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Ethologists have been particularly concerned with the evolution of behavior and the understanding of behavior in terms of the theory of natural selection. In one sense the first modern ethologist was Charles Darwin, whose book The expression of the ...
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System Essays in Biochemistry vol 40: The Nuclear Receptor Superfamily Essays in Biochemistry vol 39: Programmed Cell Death Essays in Biochemistry vol 38: Proteases in Biology and Medicine Essays in Biochemistry vol 37: Regulation of Gene Expression ...
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