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相关概念视频

Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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Polygenic Traits01:18

Polygenic Traits

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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...
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Incomplete Dominance01:43

Incomplete Dominance

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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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Genetic Variation01:25

Genetic Variation

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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,...
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Pedigree Analysis01:35

Pedigree Analysis

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Overview
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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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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.
GWAS does not require the identification of the target gene involved in...
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相关实验视频

Updated: Jan 10, 2026

Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER
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PSVRP:用于复杂特征基因组学和精密育种的猪结构变异参考小组.

Xiang Li1, Yu Quan1, Dong Li1,2

  • 1College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.

BMC genomics
|November 26, 2025
PubMed
概括

研究人员使用各种全基因组数据创建了一个全面的猪结构变异参考小组 (PSVRP). 该资源确定了许多结构变异 (SV),揭示了猪种群分歧和与改进育种的适应性和经济特征相关的基因.

关键词:
复杂的特征 复杂的特征猪基因组学 猪基因组学结构变体 结构变体

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科学领域:

  • 基因组学就是基因组学.
  • 动物遗传学动物遗传学
  • 人口遗传学 人口遗传学

背景情况:

  • 猪是全球重要的蛋白质来源和研究模型.
  • 测序技术的进步加速了猪遗传研究.
  • 由于技术上的挑战,猪的结构变异 (SV) 尚未得到充分研究.

研究的目的:

  • 为猪结构变异 (SVs) 构建一个高分辨率,人口规模的参考面板.
  • 为了深入了解猪的遗传变异.
  • 为了促进发现养猪的功能变体.

主要方法:

  • 整合了21个长读和1,193个短读全基因组复序数据集.
  • 构建了猪结构变异参考小组 (PSVRP).
  • 进行了遗传学和ADMIXTURE分析,以及选择扫描.

主要成果:

  • 确定了319,058个高度可靠的SV,包括插入和删除.
  • 揭示了亚洲和欧洲猪种群之间的明显遗传差异.
  • 突出的候选基因 (例如,EPAS1,NOVA1,PLAG1,MIB1) 与适应和特征相关.

结论:

  • 该PSVRP是高分辨率,种群规模的猪SV基因型定型的宝贵资源.
  • 提高对猪遗传变异和功能变异的理解.
  • 为精准养猪和特征发现提供了洞察力.