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相关概念视频

Mutations01:35

Mutations

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Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
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Mutations in Microorganisms01:18

Mutations in Microorganisms

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Mutations are heritable changes in an organism’s genome involving alterations in the base sequence of DNA or RNA. These changes can influence cellular processes and phenotypic traits, potentially transforming the unaltered wild type into a mutant form. Such changes, termed forward mutations, are pivotal in shaping the genetic diversity of organisms.RNA viruses exhibit the highest mutation rates due to the absence of robust proofreading mechanisms during genome replication. In contrast,...
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Viral Mutations00:36

Viral Mutations

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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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Genetic Variation01:25

Genetic Variation

332
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,...
332
Mismatch Repair01:20

Mismatch Repair

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Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
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Viral Recombination00:57

Viral Recombination

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Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
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相关实验视频

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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Following the Dynamics of Structural Variants in Experimentally Evolved Populations

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的突变的突变.

Xiao Peng1, Mo Chen2, Dong Wang2

  • 1Department of Stomatology, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, Anhui Province, China. px91056@163.com.

Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences
|June 7, 2023
PubMed
概括
此摘要是机器生成的。

两名男性的基底细胞神经综合征 (BCNS) 与PTCH1基因突变有关. 一名患者还患有FANCD2基因突变,可能影响智力,囊治疗成功.

关键词:
双边肋骨基底细胞神经囊综合征案例报告案例报告这就是FANCD2基因.基因突变是一种基因突变.一个PTCH1基因.家庭 家庭 家庭.

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A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe

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The Lambda Select cII Mutation Detection System
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The Lambda Select cII Mutation Detection System

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相关实验视频

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科学领域:

  • 遗传学和分子生物学
  • 医学综合征 医学综合征
  • 口腔和牙面部外科手术

背景情况:

  • 基底细胞神经综合征 (BCNS),也称为戈林综合征,是一种罕见的自体主导性疾病.
  • 它的特征是多个基底细胞癌,角囊和骨异常.
  • 遗传突变,主要是PTCH1基因,是BCNS的确立原因.

研究的目的:

  • 在两名出现囊的男性患者中确定BCNS的遗传基础.
  • 调查基因突变和临床表现,包括智力之间的潜在相关性.
  • 报告BCNS患者下囊的手术治疗和随访结果.

主要方法:

  • 对怀疑BCNS的两名男性患者的临床和放射性评估.
  • 患者和家庭成员的全外体高通量测序,以确定遗传突变.
  • 外科干预,包括化解压和囊的切割.

主要成果:

  • 两名患者均被诊断为BCNS,由异性PTCH1基因突变 (c.C2541C>A和c.C1501C>T) 证实.
  • 在两个试验者的母亲身上也发现了PTCH1突变.
  • 一个智力低下的患者也表现出FANCD2基因突变 (c.C2141T和c.G3343A),而另一个智力正常的患者则没有.

结论:

  • 在这些情况下,PTCH1基因突变被证实是BCNS的潜在原因.
  • 在BCNS患者中,FANCD2基因突变可能与认知障碍有关.
  • 在BCNS中手术治疗囊是有效的,治疗后没有观察到复发.