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Videos de Conceptos Relacionados

Heritability01:06

Heritability

Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic" a trait is,...
Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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.
GWAS does not require the identification of the target gene involved in...
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Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.

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Video Experimental Relacionado

Updated: Jun 19, 2026

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
09:37

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

Published on: August 15, 2019

Encontrar la heredabilidad perdida de enfermedades complejas.

Teri A Manolio1, Francis S Collins, Nancy J Cox

  • 1National Human Genome Research Institute, Building 31, Room 4B09, 31 Center Drive, MSC 2152, Bethesda, Maryland 20892-2152, USA. manoliot@mail.nih.gov

Nature
|October 9, 2009
PubMed
Resumen
Este resumen es generado por máquina.

Los estudios de asociación de todo el genoma (GWAS) encuentran muchas variantes genéticas para enfermedades complejas. Sin embargo, estos explican sólo una pequeña parte de la heredabilidad, lo que lleva a la investigación de la heredabilidad.

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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
09:37

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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
05:53

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Área de la Ciencia:

  • Genética y genómica.
  • Enfermedades complejas humanas Enfermedades complejas humanas.
  • Arquitectura genética de la arquitectura genética

Sus antecedentes:

  • Los estudios de asociación de todo el genoma (GWAS) han identificado numerosas variantes genéticas vinculadas a enfermedades y rasgos humanos complejos.
  • Los hallazgos actuales de GWAS explican solo una pequeña fracción de la agrupación de enfermedades familiares, dejando una parte significativa de la heredabilidad sin explicación ("heredabilidad faltante").

Objetivo del estudio:

  • Investigar fuentes potenciales que contribuyen a la "heredabilidad faltante" en enfermedades humanas complejas.
  • Proponer estrategias de investigación avanzadas más allá de los actuales GWAS para comprender mejor la genética de las enfermedades.

Principales métodos:

  • Revisión y análisis de los datos y la literatura GWAS existentes.
  • Exploración de nuevos factores genéticos y no genéticos que influyen en rasgos complejos.
  • Desarrollo de metodologías de investigación extendida para estudios genéticos.

Principales resultados:

  • Identificaron varios contribuyentes potenciales a la falta de heredabilidad, incluidas las variantes raras, las interacciones gen-gen y los factores ambientales.
  • Propuso un enfoque de investigación multifacético que integra la genómica con otros datos biológicos y clínicos.

Conclusiones:

  • Comprender la base genética completa de las enfermedades complejas requiere ir más allá del GWAS estándar.
  • La investigación futura debe incorporar diversas metodologías para descubrir la imagen completa de la heredabilidad, lo que permite mejorar las estrategias de prevención y tratamiento de enfermedades.