简要介绍:基因组预测基于对猪基因组关系矩阵的公正估计
M Y Li1, L Y Shi2, D E MacHugh3
1State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Animal : an international journal of animal bioscience
|January 16, 2025
概括
一种不偏见的亲属关系估计方法可以提高动物育种中遗传预测的准确性. 与传统方法相比,这种方法为增强的育种策略提供了更可靠的基因组关系估计.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 基因组预测 基因组预测
背景情况:
- 传统的基因组关系矩阵 (GRM) 可以有偏见,影响遗传分析.
- 准确的亲属关系估计对于有效的基因组最佳线性无偏预测 (GBLUP) 至关重要.
研究的目的:
- 为了评估一个不偏见的亲属关系 (UKin) 估计方法的预测性能.
- 用模拟和真实世界的猪数据集,将UKin与其他GRM构造方法进行比较.
主要方法:
- 使用了基因组最佳线性无偏预测 (GBLUP) 框架.
- 应用了一个不偏见的亲属关系 (UKin) 估计方法.
- 将UKin与VanRaden1,VanRaden2,Goudet和ROH方法在模拟和大白猪数据上进行比较.
主要成果:
- 在模拟数据中,UKin与VanRaden1结合显示出高预测准确度 (0.558).
- 在模拟数据中,VanRaden2也实现了高精度 (0.561).
- 大多数方法,除了ROH,在模拟数据中显示出类似的公正性 (约1.10),在猪数据中显示出类似的公正性 (约0.99).
结论:
- 公正的亲属关系估计方法显示了改善动物育种的前景.
- 准确的亲属关系估计对于牲畜中可靠的基因组预测至关重要.
更多相关视频
08:03Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
Published on: December 7, 2021
2.1K
10:08Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
Published on: August 12, 2019
16.9K
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.7K
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...
5.7K
Pedigree Analysis
83.8K
Overview
83.8K
Gene Evolution - Fast or Slow?
7.0K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.0K
Hardy-Weinberg Principle
71.6K
Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.
71.6K
Multi-species Conserved Sequences
3.9K
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...
3.9K
Punnett Squares
112.5K
Overview
112.5K
