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G banding

Index G banding

G-banding, G banding, or Giemsa banding is a technique used in cytogenetics to produce a visible karyotype by staining condensed chromosomes. [1]

21 relations: Adenine, Centromere, Chromosomal translocation, Chromosome, Cytogenetics, Cytosine, Euchromatin, GC-content, Genetic disorder, Giemsa stain, Guanine, Heterochromatin, Homologous chromosome, Karyotype, Metaphase, R‑banding, Staining, Telomere, Thymine, Transcription (biology), Trypsin.

Adenine

Adenine (A, Ade) is a nucleobase (a purine derivative).

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Centromere

The centromere is the specialized DNA sequence of a chromosome that links a pair of sister chromatids (a dyad).

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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 (from Ancient Greek: χρωμόσωμα, chromosoma, chroma means colour, soma means body) is a DNA molecule with part or all of the genetic material (genome) of an organism.

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Cytogenetics

Cytogenetics is a branch of genetics that is concerned with how the chromosomes relate to cell behaviour, particularly to their behaviour during mitosis and meiosis.

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Cytosine

Cytosine (C) is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA).

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Euchromatin

Euchromatin is a lightly packed form of chromatin (DNA, RNA, and protein) that is enriched in genes, and is often (but not always) under active transcription.

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GC-content

In molecular biology and genetics, GC-content (or guanine-cytosine content) is the percentage of nitrogenous bases on a DNA or RNA molecule that are either guanine or cytosine (from a possibility of four different ones, also including adenine and thymine in DNA and adenine and uracil in RNA).

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Genetic disorder

A genetic disorder is a genetic problem caused by one or more abnormalities in the genome.

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Giemsa stain

Giemsa stain, named after German chemist and bacteriologist Gustav Giemsa, is used in cytogenetics and for the histopathological diagnosis of malaria and other parasites.

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Guanine

Guanine (or G, Gua) is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine (uracil in RNA).

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Heterochromatin

Heterochromatin is a tightly packed form of DNA or condensed DNA, which comes in multiple varieties.

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Homologous chromosome

A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during meiosis.

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Karyotype

A karyotype is the number and appearance of chromosomes in the nucleus of a eukaryotic cell.

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Metaphase

Metaphase (from the Greek μετά, "adjacent" and φάσις, "stage") is a stage of mitosis in the eukaryotic cell cycle in which chromosomes are at their second-most condensed and coiled stage (they are at their most condensed in anaphase).

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R‑banding

R-banding is a cytogenetics technique that produces the reverse of the G-band stain on chromosomes.

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Staining

Staining is an auxiliary technique used in microscopy to enhance contrast in the microscopic image.

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Telomere

A telomere is a region of repetitive nucleotide sequences at each end of a chromosome, which protects the end of the chromosome from deterioration or from fusion with neighboring chromosomes.

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Thymine

---> Thymine (T, Thy) is one of the four nucleobases in the nucleic acid of DNA that are represented by the letters G–C–A–T.

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Transcription (biology)

Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase.

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Trypsin

Trypsin is a serine protease from the PA clan superfamily, found in the digestive system of many vertebrates, where it hydrolyzes proteins.

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Redirects here:

G-banding, Giemsa banding, Giemsa-banding.

References

[1] https://en.wikipedia.org/wiki/G_banding

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