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相关概念视频

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.
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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Genetic Lingo01:11

Genetic Lingo

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Overview
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Pleiotropy01:33

Pleiotropy

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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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Pedigree Analysis01:35

Pedigree Analysis

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Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
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相关实验视频

Updated: Jul 1, 2025

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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透性,可变表达性和单源神经发育障碍.

Servane de Masfrand1, Benjamin Cogné2, Mathilde Nizon2

  • 1Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France.

European journal of medical genetics
|March 7, 2024
PubMed
概括

导致神经发育障碍的遗传变异的不完全透可能比以前所认为的更为常见. 这一发现影响了患有这些疾病的家庭的遗传咨询和诊断.

关键词:
不完全的透率.智力障碍 智力障碍是一种智力障碍.这是一种单一的单一基因.神经发育障碍 神经发育障碍

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科学领域:

  • 遗传学 是一个遗传学.
  • 神经发育障碍 神经发育障碍
  • 分子生物学分子生物学

背景情况:

  • 大多数单一性疾病表现出不完全的透性.
  • 神经发育障碍通常使用单个和多核酸变体 (SNV/MNVs) 的完整透模型进行解释.

研究的目的:

  • 调查单一性神经发育障碍中SNV/MNVs不完全透的频率.
  • 评估来自无症状父母的致病变异的遗传模式.

主要方法:

  • 从2020年到2022年,与法国智力障碍分子诊断网络进行了一项合作研究.
  • 招募了具有神经发育障碍指数病例的家庭,这些家庭携带来自无症状父母的致病性/可能致病性变体.
  • 对可用的祖父母进行了隔离分析.

主要成果:

  • 十二名患有单一性神经发育障碍的患者从无症状父母那里继承了致病性/可能致病性变体.
  • 在11个基因中发现了变异,包括CAMTA1,MBD5,KMT2C和CUL3.3.
  • 在6个家族中进行的分离研究证实,在健康的携带者父母中,这些变异是新的.

结论:

  • 在神经发育障碍中SNV/MNVs的不完全透率可能被低估.
  • 这一发现对于变异解释,家庭研究,遗传咨询和产前诊断至关重要.
  • 需要进一步的研究来阐明不完全透背后的分子机制.