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相关概念视频

Polygenic Traits01:18

Polygenic Traits

68.8K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
68.8K
Nature and Nurture01:10

Nature and Nurture

22.1K
Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
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Heritability01:06

Heritability

560
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"...
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Genetic Variation01:25

Genetic Variation

1.2K
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
1.2K
Human Genetics01:28

Human Genetics

1.4K
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.
The complex relationship between genetics and psychology is observable through common biological components such...
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Sex-linked Disorders01:43

Sex-linked Disorders

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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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相关实验视频

Updated: Jan 7, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
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In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

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基因异质性是家庭矮身的基础.

Margot Comel1, Mouna Barat-Houari2, Fanny Alkar1

  • 1Montpellier University, ERN ITHACA, Génétique Clinique, Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Centre Hospitalier Universitaire de Montpellier, Centre de Référence Constitutif des Maladies Osseuses Constitutionnelles, 34295 Montpellier, France.

Diagnostics (Basel, Switzerland)
|December 30, 2025
PubMed
概括

家庭矮身可能源于多种遗传原因,而不仅仅是一个. 这项研究在一个家族中发现了三种不同的基因变异 (SHOX,PDE4D,ACAN),影响了诊断和治疗策略.

关键词:
在ACAN ACAN中使用.这是一个PDE4D.这是Shoxx.这就是Acrodysostosis.这种情况是Acroscyphodysplasia.这种疾病叫做dyschondrosteosis.矮身高 矮身高的人

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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
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相关实验视频

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科学领域:

  • 遗传学 是一个遗传学.
  • 儿科 儿科 儿科
  • 骨发育不良症 骨发育不良症

背景情况:

  • 家庭矮身是一个常见的临床遗传学转诊.
  • 遗传异质性使诊断和管理矮身变得复杂.
  • 叠加的表型可以来自不同的遗传变异.

研究的目的:

  • 为了研究一个具有重叠的家族矮身表型的家族.
  • 为了确定一个多重受影响的家庭中矮身的遗传基础.
  • 在复杂的病例中展示综合基因分析的实用性.

主要方法:

  • 追溯收集临床,放射和分子数据.
  • 利用向基因面板,全基因组测序和桑格测序.
  • 美国医学遗传学学院应用变异解释指南.

主要成果:

  • 在SHOX,PDE4D和ACAN基因中确定了致病变体.
  • SHOX变体与异构造相关;PDE4D变体与综合征性异构造相关.
  • ACAN变异与矮身和骨异常有关;组合变异显示了附加效应.

结论:

  • 系统的分子研究对于异构的表型至关重要.
  • 综合基因分析有助于个性化护理和遗传咨询.
  • 仅仅是家族史并不能排除由于不同的遗传病因而进行分子检测.