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Related Concept Videos

Human Genetics01:28

Human Genetics

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Genetic markers cannot determine Jewish descent.

Raphael Falk1

  • 1Department of Genetics, Program for History and Philosophy of Science, The Hebrew University of Jerusalem Jerusalem, Israel.

Frontiers in Genetics
|February 6, 2015
PubMed
Summary
This summary is machine-generated.

Genetic studies reveal that while Jewish communities exhibit vertical genetic continuity, extensive horizontal gene flow with surrounding populations prevents the identification of a distinct Jewish genotype. There is no single Jewish gene.

Keywords:
Khazar origins of AshkenazimY-chromosome inheritance of Cohanimbiology of the Jewsevolution at DNA-sequence levelgenetics of racehorizontal vs. vertical inheritance

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Area of Science:

  • Anthropology
  • Genetics
  • Sociology

Background:

  • Human social interaction and differentiation are rooted in Darwinian evolution.
  • The concepts of biological determinism and scientific racism emerged during the Enlightenment.
  • Recent research has focused on identifying a common genotype for Biblical Israelites through phenotypic analysis.

Purpose of the Study:

  • To investigate the genetic common denominators among Jewish populations.
  • To analyze various phenotypes including facial patterns, blood types, diseases, and DNA sequences.
  • To determine if a distinct Jewish genotype exists.

Main Methods:

  • Analysis of diverse phenotypes such as facial patterns, blood types, and diseases.
  • Examination of DNA sequences.
  • Assessment of genetic continuity across generations and inter-community gene flow.

Main Results:

  • Jewish communities demonstrate detectable vertical genetic continuity over generations.
  • Significant horizontal genetic exchange occurred between Jewish groups and surrounding gentile populations.
  • Despite consanguinity, a singular Jewish genotype could not be identified.

Conclusions:

  • Genetic diversity exists within and between Jewish populations.
  • The concept of a unified Jewish genotype is not supported by genetic evidence.
  • Genetic findings challenge notions of biological determinism in defining Jewish identity.