关于新疆棕牛体形状特征的全基因组协会研究
Menghua Zhang1, Yachun Wang2, Qiuming Chen1
1College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
International journal of molecular sciences
|October 16, 2024
概括
这项研究使用遗传和基因组数据分析了新疆棕牛的身体形状特征. 因子分析简化了复杂的特征,全基因组关联研究确定了改善牛养殖计划的关键基因.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 基因组选择 基因组选择
背景情况:
- 身体形状特征对于牛的健康,繁殖和生产力至关重要,影响着群体选择和品种发展.
- 了解这些特征的遗传基础对于有效的育种计划至关重要.
研究的目的:
- 估计新疆棕牛体形状特征的遗传参数.
- 用因子分析来简化复杂的形状特征.
- 通过全基因组关联研究 (GWAS) 识别与这些特征相关的遗传变异.
主要方法:
- 使用了血统,表型 (1185条记录) 和基因组数据 (496头牛的测序).
- 进行了因子分析,以确定身体形状的主要组成部分.
- 进行全基因组关联研究 (GWAS) 来检测显著的单核酸多态 (SNP).
主要成果:
- 大多数身体形状特征表现出中度至高的遗传性 (0.170.73).
- 因子分析揭示了五个主要因素,解释了59.12%的差异,代表了身体的关键方面.
- 对于12个特征,GWAS确定了102个显著的SNP,其中一些近乎已知的基因/QTL和其他新鲜的基因. 已发现的关键候选基因包括LCORL,NCAPG和FAM184B.
结论:
- 因子分析有效地减少了身体形状特征的维度,减轻了计算负载.
- 已识别的候选基因可以提高新疆棕牛养殖中的基因组选择精度.
- 这项研究为改善牛养殖计划提供了宝贵的遗传见解.
更多相关视频
07:46Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays
Published on: July 12, 2024
467
09:09Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid
Published on: August 8, 2017
7.3K
相关概念视频
Genome-wide Association Studies-GWAS
13.1K
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...
13.1K
Polygenic Traits
65.5K
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...
65.5K
Incomplete Dominance
21.8K
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.
21.8K
X-linked Traits
54.1K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
54.1K
Background and Environment Affect Phenotype
6.5K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.5K
