相关实验视频
Updated: May 14, 2026

22:27
Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.
Published on: May 7, 2010
概括
研究人员绘制了大麦 (Hordeum vulgare L.) 基因组图,为基因发现创造了一个全面的资源. 这份详细的物理和遗传地图有助于理解大麦.
科学领域:
- 植物基因组学 植物基因组学
- 农作物科学 农作物科学
- 分子生物学分子生物学
背景情况:
- 大麦 (Hordeum vulgare L.) 是一个具有全球意义的化作物,具有庞大的基因组.
- 了解其遗传结构对于作物改进至关重要.
研究的目的:
- 为大麦基因组开发一个综合的物理,遗传和功能序列资源.
- 在结构化的全基因组背景下描述大麦基因空间.
主要方法:
- 构建一个4.98Gb的物理地图,与一个高分辨率的遗传地图挂.
- 整合全基因组猎枪组装,cDNA和RNA序列数据.
- 分析来自不同大麦加入的调查序列.
主要成果:
- 一个覆盖4.98Gb的物理地图,3.90Gb与遗传地图挂.
- 识别了79,379个转录集群,包括26,159个高度可靠的基因.
- 发现了广泛的单核酸变异和复杂的转录后调节的证据.
结论:
- 这项研究为大麦提供了基本的基因组资源.
- 该资源促进了基因组辅助研究和作物改进战略.
- 对基因调节和变异的洞察力为增强大麦育种铺平了道路.
相关概念视频
Organization of Genes
Overview
Nucleic Acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Organization of Genes
Overview
Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
Epistasis Analysis
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
Genetic Material
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.

