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A locus, as related to genomics, is a physical site or location within a genome (such as a gene or another DNA segment of interest), somewhat like a street address. The plural of locus is loci.
In genetics, a locus (pl.: loci) is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. [1] Each chromosome carries many genes, with each gene occupying a different position or locus; in humans, the total number of protein-coding genes in a complete haploid set of 23 chromosomes is estimated at ...
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. (medicine) The site on the body where a ...
The position of a gene on a chromosome is its locus (plural: loci) Each gene can exist in two or more different forms called alleles; Different alleles of a gene have slightly different nucleotide sequences but they still occupy the same position (locus) on the chromosome
Definition noun, plural: genetic loci The location of a gene (or of a significant sequence) on a chromosome or on a linkage map. Supplement For example, the locus of the gene OCA1 (or Oculocutaneous Albinism
A dictionary of more than 150 genetics-related terms written for healthcare professionals. This resource was developed to support the comprehensive, evidence-based, peer-reviewed PDQ cancer genetics information summaries.
Locus (plural loci) is a position or place on a chromosome occupied by a particular gene or one of its alleles in all species. A locus can be a coding sequence, a regulatory region, or other regions. Any pair of homologous chromosomes can contain a specific locus.
A locus is a spot or “address” on a chromosome at which a gene for a particular trait is located in all members of a species. It can also refer to the location of a mutation or other genetic marker. A given locus can be found on any pair of homologous chromosomes (Brown, 2009).
A specific position, region, or segment along a chromosome is called a locus. Each gene occupies a specific locus (so the terms locus and gene are often used interchangeably). Each locus will have an allelic form (allele). The complete set of alleles (at all loci of interest) in an individual is its genotype. Typically, when writing out a ...
A locus is the physical location of a gene on a chromosome. There may be one or more alleles at a single gene locus. In diploid organisms, there are two copies of each locus on the autosomal chromosomes.