gene locus definition
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Loci A locus is the specific physical location of a gene or other DNA sequence on a chromosome, like a genetic street address. The plural of locus is loci. locus is the specific physical location of a gene or other DNA sequence on a chromosome, like a genetic street address. The plural of locus is loci.
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- Locus. Definition. noun, plural: loci. (general) A place, space or locality, especially a centre of an activity. (mathematics) The set of all points whose coordinates satisfy a given equation or condition. (genetics) The location of a gene (or of a significant sequence) on a chromosome, as in genetic locus.
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Quantitative trait locus A quantitative trait locus (QTL) is a section of DNA (the locus) that correlates with variation in a phenotype (the quantitative trait).The QTL typically is linked to, or contains, the genes that control that phenotype.QTLs are mapped by identifying which molecular markers (such as SNPs or AFLPs) correlate with an observed trait. This is often an early step in identifying and sequencing the actual genes that cause the trait variation.he QTL typically is linked to, or contains, the genes that control that phenotype. QTLs are mapped by identifying which molecular markers (such as SNPs or AFLPs) correlate with an observed trait. This is often an early step in identifying and sequencing the actual genes that cause the trait variation.
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- A measure of how common an allele is in a population; the proportion of all alleles at one gene locus that are of one specific type in a population.
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Allele One member of a pair (or any of the series) of genes occupying a specific spot on a chromosome (called locus) that controls the same trait. For example, a pair of alleles controlling the same trait, i.e. eye color: one allele codes for blue eyes, another allele for brown eyes.
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Gene A gene is a locus (or region) of DNA that encodes a functional RNA or protein product, and is the molecular unit of heredity. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits.egulatory regions of a gene such as enhancers do not necessarily have to be close to the coding sequence on the linear molecule because the intervening DNA can be looped out to bring the gene and its regulatory region into proximity. Similarly, a gene's introns can be much larger than its exons.
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Locus (mathematics) The set of all points whose coordinates satisfy a given equation or condition. (genetics) The location of a gene (or of a significant sequence) on a chromosome, as in genetic locus. (medicine) The site on the body where a pathogen enters. Supplement. Word origin: Latin stlocus, a place.
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gene gene. A segment of DNA, occupying a specific place on a chromosome, that is the basic unit of heredity. Genes act by directing the synthesis of proteins, which are the main components of cells and are the catalysts of all cellular processes.ach gene is a specific segment of DNA, occupying a fixed place on a chromosome. Genes contain the chemical information needed to create different kinds of proteins.
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Definitions &Translations Noun. 1. gene - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; genes were formerly called factors. cistron, factor.
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gene gene. the structural unit of inheritance in living organisms. A gene is, in essence, a segment of DNA that has a particular purpose, i.e., that codes for (contains the chemical information necessary for the creation of) a specific enzyme or other protein. gene is, in essence, a segment of DNA that has a particular purpose, i.e., that codes for (contains the chemical information necessary for the creation of) a specific enzyme or other protein.
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Quantitative trait locus A quantitative trait locus (QTL) is a region of DNA that is associated with a particular phenotypic trait. These QTLs are often found on different chromosomes.Knowing the number of QTLs that explains variation in the phenotypic trait tells us about the genetic architecture of a trait.he simplest method for QTL mapping is analysis of variance (ANOVA, sometimes called marker regression) at the marker loci. In this method, in a backcross, one may calculate a t-statistic to compare the averages of the two marker genotype groups.
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Wht does locus mean in maths? In mathematics, a locus (Latin for place, plural loci) is a collection of points which share a property. The term 'locus' is usually used of a condition which defines a continuous figure or figures, that is, a curve. An ellipse is the locus of points, the sum of the distances from which to the foci is a given value. * A hyperbola is the locus of points, the difference of the distances from which to the foci is a given value.
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Locus (genetics) For example, the locus of gene OCA1 may be written 11q1.4-q2.1, meaning it is on the long arm of chromosome 11, somewhere in the range from sub-band 4 of region 1 to sub-band 1 of region 2.The ends of a chromosome are labeled pter and qter , and so 2qter refers to the terminus of the long arm of chromosome 2.or example, the locus of gene OCA1 may be written 11q1.4-q2.1, meaning it is on the long arm of chromosome 11, somewhere in the range from sub-band 4 of region 1 to sub-band 1 of region 2.
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Definitions &Translations Genetic Loci. Specific regions that are mapped within a GENOME. Genetic loci are usually identified with a shorthand notation that indicates the chromosome number and the position of a specific band along the P or Q arm of the chromosome where they are found.or example the locus 6p21 is found within band 21 of the P-arm of CHROMOSOME 6. Many well known genetic loci are also known by common names that are associated with a genetic function or HEREDITARY DISEASE.
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locus The cafeteria was the locus of activity. (mathematics) The set of all points whose coordinates satisfy a given equation or condition. A circle is the locus of points from which the distance to the center is a given value, the radius. (genetics) A fixed position on a chromosome that may be occupied by one or more genes.
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Definitions &Translations gene - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; genes were formerly called factors.cistron, factor.. gene - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; genes were formerly called factors. cistron, factor.
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- Definition of gene for Students. : a unit of DNA that is usually located on a chromosome and that controls the development of one or more traits and is the basic unit by which genetic information is passed from parent to offspring.
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Biology 100/101 Lecture 13 Genes, Traits, and Proteins  (Print Version) 9.7. Remember, you get one chromosome of each homologous pair from each parent (by way of their gametes). Homologous chromosomes have the same sequence of gene locations that control the same characteristics (traits). A gene locus (plural, loci) is the specific location of a gene on a particular chromosome.se your chromosome models from discussion or lab to illustrate the location of a gene for the production of a particular protein. Illustrate the location of the gene on homologous chromosomes, as well as on sister chromatids.
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Locus (genetics) Locus (genetics) A locus (plural loci) in genetics is the position on a chromosome. Each chromosome carries many genes; humans' estimated 'haploid' protein coding genes are 19,000-20,000, on the 23 different chromosomes. A variant of the similar DNA sequence located at a given locus is called an allele.
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Locus Definition. noun, plural: loci. (general) A place, space or locality, especially a centre of an activity. (mathematics) The set of all points whose coordinates satisfy a given equation or condition. (genetics) The location of a gene (or of a significant sequence) on a chromosome, as in genetic locus.
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Words near gene in the dictionary The definition of a gene is a unit on a chromosome that determines a specific trait in an organism, or a male's name. An example of a gene is a chromosome unit that determines a person's eye color.
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- Full Definition of LOCUS. 1. 2. : the set of all points whose location is determined by stated conditions. 3. : the position in a chromosome of a particular gene or allele. See locus defined for English-language learners.
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- The gene pool includes all genetic loci and all the alleles for each locus present in the population. The gene pool of a population can be described and characterized by certain statistical properties: Allele frequency (gene frequency) is the proportion of all alleles at a locus that are of a specified type.
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What are gene families? A gene family is a group of genes that share important characteristics. In many cases, genes in a family share a similar sequence of DNA building blocks (nucleotides).These genes provide instructions for making products (such as proteins) that have a similar structure or function.ach grouping is given a name and symbol, and contains a table of the genes in that family. The Gene Ontology database lists the protein products of genes by their location within the cell (cellular component), biological process, and molecular function.
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Quantitative trait locus A quantitative trait locus is a section of DNA which correlates with variation in a phenotype. Usually the QTL is linked to, or contains, the genes which control that phenotype. QTLs are mapped by identifying which molecular markers correlate with an observed trait. This is often an early step in identifying and sequencing the actual genes that cause the trait variation.
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- Full Definition of LOCUS. 1. 2. : the set of all points whose location is determined by stated conditions. 3. : the position in a chromosome of a particular gene or allele. See locus defined for English-language learners. See locus defined for kids.