五种毒蛇 (Viperidae, Squamata) 的完整基因组序列
Abdellah Idrissi Azami1, Stacy Pirro2, Salsabil Hamdi3
1Laboratory of Precision Medicine and One Health, Mohammed VI University of Sciences and Health.
概括
我们测序了五种毒蛇物种的基因组,包括Agkistrodon piscivorus和几个Crotalus物种. 这些完整的基因组序列为研究和保护工作提供了宝贵的资源.
科学领域:
- 基因组学就是基因组学.
- 类学 类学 类学
- 进化生物学 进化生物学
背景情况:
- 毒蛇是一种多样化的有毒蛇群,具有重要的生态作用.
- 完整的基因组序列对于理解蛇的进化,毒液成分和保护遗传学至关重要.
- 对于许多毒蛇物种,基因组数据有限,这阻碍了全面的研究.
研究的目的:
- 为了生成和呈现五种不同的毒蛇物种的完整基因组序列.
- 为Agkistrodon piscivorus和四种Crotalus物种 (C. aquilus,C. enyo,C. mitchellii,C. viridis) 提供基础基因组数据.
- 为科学界公开这些宝贵的基因组资源.
主要方法:
- 从野生捕获的毒蛇标本中提取DNA.
- 使用Illumina技术进行高通量测序.
- De novo基因组组装,然后进行最后一步,以确保完整性和准确性.
主要成果:
- 成功生成了五种毒蛇物种的完整基因组序列.
- 这些被测序的物种包括Agkistrodon piscivorus和Crotalus aquilus,Crotalus enyo,Crotalus mitchellii,以及Crotalus viridis.
- 所有生成的基因组数据都已存储,并在GenBank.com上公开提供.
结论:
- 呈现的完整基因组序列代表了毒蛇基因组学的重大进步.
- 这些基因组资源将促进未来对生物学的研究,进化和保护.
- 这些基因组的公开可访问性促进了合作的科学努力和对这些爬行动物的更广泛的理解.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.6K
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...
5.6K
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
Convergent Evolution
27.2K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.2K
Viral Mutations
32.1K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
32.1K
Genomic DNA in Eukaryotes
46.6K
Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
46.6K
Genomics
35.3K
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...
35.3K


