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Locus (genetics)

A locus (plural loci) is the specific location or position of a gene, DNA sequence, on a chromosome, in the field of genetics. [1]

22 relations: Allele, Centromere, Centrosome, Chromosomal translocation, Chromosome, Cytogenetic notation, G banding, Gene, Gene map, Gene mapping, Genetics, Genome, Karyotype, Microscope, National Cancer Institute, Nucleic acid sequence, Null allele, Oculocutaneous albinism type I, Phenotypic trait, Ploidy, Polyploid, Zygosity.

Allele

An allele, or allel, is one of a number of alternative forms of the same gene or same genetic locus.

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Centromere

The centromere (''centro-'' + ''-mere'') is the part of a chromosome that links sister chromatids.

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Centrosome

In cell biology, the centrosome (Latin centrum 'center' + Greek sōma 'body') is an organelle that serves as the main microtubule organizing center (MTOC) of the animal cell as well as a regulator of cell-cycle progression.

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Chromosomal translocation

In genetics, a chromosome translocation is a chromosome abnormality caused by rearrangement of parts between nonhomologous chromosomes.

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Chromosome

A chromosome (''chromo-'' + ''-some'') is a packaged and organized structure containing most of the DNA of a living organism.

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Cytogenetic notation

The following table summarizes symbols and abbreviations used in cytogenetics.

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G banding

G-banding, G banding, or Giemsa banding is a technique used in cytogenetics to produce a visible karyotype by staining condensed chromosomes.

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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.

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Gene map

A gene map is the descriptive representation of the structure of a single gene.

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Gene mapping

Gene mapping, describes the methods used to identify the locus of a gene and the distances between genes.

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Genetics

Genetics is the study of genes, heredity, and genetic variation in living organisms.

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Genome

In modern molecular biology and genetics, the genome is the genetic material of an organism.

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Karyotype

A karyotype (from Greek κάρυον karyon, "kernel", "seed", or "nucleus", and τύπος typos, "general form") is the number and appearance of chromosomes in the nucleus of a eukaryotic cell.

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Microscope

A microscope (from the μικρός, mikrós, "small" and σκοπεῖν, skopeîn, "to look" or "see") is an instrument used to see objects that are too small for the naked eye.

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National Cancer Institute

The National Cancer Institute (NCI) is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services.

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Nucleic acid sequence

A nucleic acid sequence is a succession of letters that indicate the order of nucleotides within a DNA (using GACT) or RNA (GACU) molecule.

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Null allele

A null allele is a mutant copy of a gene at a locus that completely lacks that gene's normal function.

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Oculocutaneous albinism type I

Oculocutaneous Albinism Type I or –Type 1A (OCA1A) is an autosomal recessive skin disease associated with albinism.

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Phenotypic trait

A phenotypic trait, or simply trait, is a distinct variant of a phenotypic characteristic of an organism that may be inherited, be environmentally determined or be a combination of the two.

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Ploidy

Ploidy is the number of sets of chromosomes in a cell.

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Polyploid

Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes.

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Zygosity

Zygosity is the degree of similarity of the alleles for a trait in an organism.

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References

[1] https://en.wikipedia.org/wiki/Locus_(genetics)

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