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Multiple Allele Traits01:49

Multiple Allele Traits

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In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
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Human blood is classified into different types based on the presence of antigens on the red blood cell's surface and antibodies in the plasma. Proper identification of blood type is essential for successful blood transfusion. The International Society of Blood Transfusion has identified 38 human blood types based on the surface antigens on the red blood cells. The most common types are ABO, Rh, and MNS blood types.
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The ABO Blood Group01:12

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Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
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Development of an in vitro model system for studying the interaction of Equus caballus IgE with its high-affinity receptor FcεRI
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[Eight polymorphic blood protein systems in Arab horses from Turkey].

M Uzun1, A Karkhan, A Kopar

  • 1Department of Physiology, Kafkas University, Kars, Turkey. metehanuzun@hotmail.com

Genetika
|January 12, 2002
PubMed
Summary
This summary is machine-generated.

Genetic analysis of Arabian horses using blood proteins revealed significant variations in polymorphic loci. The transferrin (Tf), hemoglobin (Hb), and esterase (Es) loci showed higher polymorphism, aiding in understanding horse genetic composition.

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Area of Science:

  • Animal Genetics
  • Biochemistry
  • Population Genetics

Context:

  • Arabian horses are a distinct breed with a unique genetic heritage.
  • Understanding the genetic diversity within horse breeds is crucial for conservation and breeding programs.
  • Blood protein polymorphisms serve as valuable genetic markers.

Purpose:

  • To analyze the genetic composition of Arabian horses.
  • To identify and quantify genetic variation using biochemical markers.
  • To assess the polymorphism levels across eight specific genetic loci.

Summary:

  • Electrophoretic analysis of blood proteins identified 43 phenotypes across eight polymorphic loci (Tf, Al, Es, AlB, Gc, Hb, PGD, PGM) in Arabian horses.
  • The transferrin (Tf), hemoglobin (Hb), and esterase (Es) loci exhibited the highest degree of polymorphism.
  • Significant deviations from expected genotypic frequencies were observed at the PGD and PGM loci, indicating potential non-random mating or selection pressures.

Impact:

  • Provides a detailed genetic profile of Arabian horses based on blood protein polymorphisms.
  • Highlights key polymorphic loci for future genetic studies and breed characterization.
  • Offers insights into the population genetics and evolutionary history of the Arabian horse breed.