基于SNP面板密度和韩国本土的基准种群大小的归算性能评估 (R)
Minjun Kim1, Hyo Jun Choo2, Sunghyun Cho3
1Department of Animal Science, Chungnam National University, Daejeon, Korea.
Animal bioscience
|April 11, 2025
概括
在韩国本土种群中,至少有1万个单核酸多态化 (SNP) 标记对于准确的基因型赋值至关重要. 鉴定准确性随着基准或试验群体规模的缩小而下降,影响遗传改进策略.
科学领域:
- 动物遗传学动物遗传学
- 基因组选择 基因组选择
- 畜牧养殖 畜牧养殖 畜牧养殖
背景情况:
- 准确的基因型归算对于家畜的基因组选择至关重要.
- 了解单核酸多态 (SNP) 面板密度和参考群体大小对优化归算准确性的影响至关重要.
- 韩国本土 (KNC) 和叶松 (YO) 种群是重要的本土畜牧资源.
研究的目的:
- 确定最佳的单核酸多态 (SNP) 面板密度,以在韩国本土 (KNC) 和Yeonsan Ogye (YO) 种群中进行精确的基因型赋值.
- 评估参考群体大小和SNP密度对归算性能和准确性的影响.
- 为本土家禽的遗传改进策略提供数据驱动的建议.
主要方法:
- 基因组数据从256只纯种KNC和199只YO中收集,分别来自5个纯种KNC.
- 使用2.5K,5K,10K和50K的SNP密度评估了推算准确度和SNP比率.
- 对YO数据集分析了参考人口大小 (50, 100, 150) 对归算的影响.
主要成果:
- 在SNP密度较高时,计算性能显著提高,特别是在10K或更高的密度下.
- 10K或更高的SNP面板密度导致超过70%的归算SNP,并大大提高了准确性.
- 当参考或测试群体大小约为50个个体时,推算效率明显下降.
结论:
- 在KNC和YO种群中,最低SNP密度为10K对于准确的基因型赋值至关重要.
- 在较小的参考或试验群体大小 (约. 50个人).个人).
- 这些发现为加强土著牲畜的基因改进计划提供了关键的见解.
相关概念视频
Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Single Nucleotide Polymorphisms-SNPs
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,...


