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  2. Hereditary persistence of fetal hemoglobin - Wikipedia

    en.wikipedia.org/wiki/Hereditary_persistence_of...

    In persons with sickle cell disease, high levels of fetal hemoglobin as found in a newborn or as found abnormally in persons with hereditary persistence of fetal hemoglobin, the HbF causes the sickle cell disease to be less severe. In essence the HbF inhibits polymerization of HbS. A similar mechanism occurs with persons who have sickle cell trait.

  3. Antagonistic pleiotropy hypothesis - Wikipedia

    en.wikipedia.org/wiki/Antagonistic_pleiotropy...

    Strength of natural selection plot as a function of age. The antagonistic pleiotropy hypothesis (APT) is a theory in evolutionary biology that suggests certain genes may confer beneficial effects early in an organism's life, enhancing reproductive success, while also causing detrimental effects later in life, contributing to the aging process.

  4. Gene mapping - Wikipedia

    en.wikipedia.org/wiki/Gene_mapping

    There are two distinctive mapping approaches used in the field of genome mapping: genetic maps (also known as linkage maps) [7] and physical maps. [3] While both maps are a collection of genetic markers and gene loci, [8] genetic maps' distances are based on the genetic linkage information, while physical maps use actual physical distances usually measured in number of base pairs.

  5. Tennant, Iowa - Wikipedia

    en.wikipedia.org/wiki/Tennant,_Iowa

    Location of Tennant, Iowa. Coordinates: Country United States: State Iowa ... and Iowa Data Center Source: U.S. Decennial Census. 2010 census. As of the ...

  6. Vertex Pharmaceuticals - Wikipedia

    en.wikipedia.org/wiki/Vertex_Pharmaceuticals

    In 2012 ivacaftor was designated as an orphan drug, identifying cystic fibrosis as affecting fewer than 200,000 people in the United States.On 31 January 2012, Vertex gained FDA approval [22] of the first drug, Kalydeco, [23] to treat the underlying cause of cystic fibrosis rather than the symptoms, in patients 6 years or older who have the G551D gene mutation.

  7. Glucose-6-phosphate dehydrogenase deficiency - Wikipedia

    en.wikipedia.org/wiki/Glucose-6-phosphate_de...

    Most individuals with G6PD deficiency are asymptomatic.When it induces hemolysis, it is usually is short-lived. [5]Most people who develop symptoms are male, due to the X-linked pattern of inheritance, but female carriers can be affected due to unfavorable lyonization or skewed X-inactivation, where random inactivation of an X-chromosome in certain cells creates a population of G6PD-deficient ...

  8. Hemoglobin E - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_E

    The βE mutation affects β-gene expression creating an alternate splicing site in the mRNA at codons 25-27 of the β-globin gene. Through this mechanism, there is a mild deficiency in normal β mRNA and production of small amounts of anomalous β mRNA. The reduced synthesis of β chain may cause β-thalassemia.

  9. Gene cluster - Wikipedia

    en.wikipedia.org/wiki/Gene_cluster

    A gene family is a set of homologous genes within one organism. A gene cluster is a group of two or more genes found within an organism's DNA that encode similar polypeptides, or proteins, which collectively share a generalized function and are often located within a few thousand base pairs of each other.

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