相关实验视频

Updated: Jul 25, 2025

Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles
09:55

Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles

Published on: August 12, 2021

3.9K

多种多样化的转子子谱系有助于早期和最近的双鱼基因组进化

Jacopo Martelossi1, Filippo Nicolini1,2, Simone Subacchi1

  • 1Department of Biological Geological and Environmental Science, University of Bologna, Via Selmi 3, 40126, Bologna, Italy.

BMC biology
|June 26, 2023
PubMed
概括

可转移元素,或TE,是真核生物中基因组变异的关键驱动因素. 这项研究揭示了双动物中异常的TE多样性,长间隔核元素 (LINE) 在它们的基因组进化和多样化中发挥着重要作用.

关键词:
比瓦尔维亚 比瓦尔维亚进行比较的基因组学.进化基因组学是进化的基因组学.类动物 类动物这里是SINE线.TE注释的注释在TE分类中,分类是TE.TE演变的演变 TE演变的演变

更多相关视频

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis07:33

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis

Published on: March 15, 2016

8.9K
Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing08:19

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing

Published on: July 7, 2020

10.5K

相关概念视频

Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
15.8K
DNA-only Transposons02:57

DNA-only Transposons

DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
14.6K
Transposons01:24

Transposons

Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
66
Convergent Evolution01:54

Convergent Evolution

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.
28.0K
Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
6.2K
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
8.0K