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  2. Allele - Wikipedia

    en.wikipedia.org/wiki/Allele

    An allele [1], or allelomorph, is a variant of the sequence of nucleotides at a particular location, or locus, on a DNA molecule. [2]Alleles can differ at a single position through single nucleotide polymorphisms (SNP), [3] but they can also have insertions and deletions of up to several thousand base pairs.

  3. Major histocompatibility complex - Wikipedia

    en.wikipedia.org/wiki/Major_histocompatibility...

    The MHC variation in the human population is high, at least 350 alleles for HLA-A genes, 620 alleles for HLA-B, 400 alleles for DR, and 90 alleles for DQ. Any two individuals who are not identical twins, triplets, or higher order multiple births, will express differing MHC molecules.

  4. Anatomography - Wikipedia

    en.wikipedia.org/wiki/Anatomography

    BodyParts3D polygon data are extracted from full-body MRI images. The MRI image set that BodyParts3D is based on is called "TARO". Taro is a common given name for males in Japanese, as John is in English. TARO is a 2mm * 2mm * 2mm voxel dataset of the human male created by the National Institute of Information and Communications Technology. [4]

  5. Human genetic variation - Wikipedia

    en.wikipedia.org/wiki/Human_genetic_variation

    The study of human genetic variation has evolutionary significance and medical applications. It can help scientists reconstruct and understand patterns of past human migration. In medicine, study of human genetic variation may be important because some disease-causing alleles occur more often in certain population groups.

  6. History and naming of human leukocyte antigens - Wikipedia

    en.wikipedia.org/wiki/History_and_naming_of...

    Interpreting Serotypes as Alleles: HL-A1 antiserum reacts to HLA-A1 gene product, a cell surface antigen, the similar cell surface antigens are found on almost all cells in the body. The frequency of HLA-A1 alleles is: HLA-A1*0101- 17.3%, *0103- 0.016%. The frequency of *0101 is 1000 times more abundant than *0103, or 99.9% of the time you have ...

  7. Mendelian traits in humans - Wikipedia

    en.wikipedia.org/wiki/Mendelian_traits_in_humans

    Autosomal dominant A 50/50 chance of inheritance. Sickle-cell disease is inherited in the autosomal recessive pattern. When both parents have sickle-cell trait (carrier), a child has a 25% chance of sickle-cell disease (red icon), 25% do not carry any sickle-cell alleles (blue icon), and 50% have the heterozygous (carrier) condition. [1]

  8. Genetic linkage - Wikipedia

    en.wikipedia.org/wiki/Genetic_linkage

    Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction.Two genetic markers that are physically near to each other are unlikely to be separated onto different chromatids during chromosomal crossover, and are therefore said to be more linked than markers that are far apart.

  9. Homologous chromosome - Wikipedia

    en.wikipedia.org/wiki/Homologous_chromosome

    The maternal and paternal chromosomes in a homologous pair have the same genes at the same locus, but possibly different alleles Further information: Karyotype A pair of homologous chromosomes , or homologs , is a set of one maternal and one paternal chromosome that pair up with each other inside a cell during fertilization .

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