全基因组测序和结构变异为胡羊的体型特征提供了洞察力
Xin Xiang1, Yujiao Guo1, Liran Zhao1
1College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.
Scientific data
|August 6, 2025
概括
胡羊的全基因组测序发现了数以百万计的遗传变异,包括单核酸多态 (SNP) 和结构变异 (SV). 这项研究为改善绵羊养殖提供了对体型特征的关键遗传见解.
科学领域:
- 动物遗传学动物遗传学
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 胡羊是一种中国本土的品种,以高繁殖率而闻名,但与其他肉羊相比,其体型较小.
- 提高胡羊的体型对于它们的经济价值至关重要.
- 了解体型的遗传基础对于有针对性的育种计划至关重要.
研究的目的:
- 探索胡羊体型特征背后的分子遗传机制.
- 识别与身体大小相关的遗传变异,包括单核酸多态 (SNPs) 和结构变异 (SVs).
- 分析与胡羊群的化和适应相关的选择特征.
主要方法:
- 在300只胡羊的全基因组测序中.
- 生物信息学分析以识别单核酸多态 (SNP) 和结构变异 (SV).
- 针对SNP和SV数据的全基因组关联研究 (GWAS),结合五个体型特征.
- 选择签名分析以探索化和适应区域.
主要成果:
- 产生了超过9.53TB的高质量测序数据.
- 确定了23,274,312个单核酸多态 (SNP) 和64,759个结构变异 (SV).
- 进行了全基因组关联研究 (GWAS),将遗传变异与体型特征联系起来,并分析了选择特征.
结论:
- 生成的数据集是胡羊养殖的宝贵遗传资源.
- 这项研究为利用结构变异 (SVs) 来改善绵羊的经济特征提供了基础.
- 对已识别的遗传变异进行进一步的研究可以为提高胡羊体型的策略提供指导.
更多相关视频
11:22Using RNA-mediated Interference Feeding Strategy to Screen for Genes Involved in Body Size Regulation in the Nematode C. elegans
Published on: February 13, 2013
12.5K
10:08Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
Published on: August 12, 2019
17.3K
相关概念视频
Genome-wide Association Studies-GWAS
14.2K
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...
GWAS does not require the identification of the target gene involved in...
14.2K
Evolutionary Relationships through Genome Comparisons
6.2K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
6.2K
Genomics
37.5K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
37.5K
Genome Size and the Evolution of New Genes
2.6K
2.6K
Multi-species Conserved Sequences
4.3K
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
4.3K
Cloning of Dolly the Sheep
4.6K
The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual, the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter...
4.6K
