相关实验视频

Updated: Jun 9, 2025

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis
07:33

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

Published on: March 15, 2016

8.8K

十二个假定染色体逆转的合维持了牛生态型之间基因流动的强大障碍

Alan Le Moan1,2, Sean Stankowski3, Marina Rafajlović1

  • 1Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden.

Evolution letters
|October 31, 2024
PubMed
概括

海洋牛 (Littorina fabalis) 的多重染色体逆转强烈地结合了繁殖障碍,推动了物种化. 这些相互关联的反转保持了二次接触后的生态型完整性,证明了它们在完成物种化过程中的作用.

关键词:
利托里纳 (Littorina) 是一个小岛.染色体的重新安排.混合区 混合区 混合区 混合区链接不平衡 关系不平衡种类的变化 种类的变化

更多相关视频

Mass-Rearing and Molecular Studies in Tortricidae Pest Insects06:22

Mass-Rearing and Molecular Studies in Tortricidae Pest Insects

Published on: March 25, 2022

2.7K
Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

13.9K

相关概念视频

Gene Flow02:39

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
34.9K
Genetics of Speciation02:16

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.1K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.1K
Exon Recombination02:32

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
Exon shuffling follows “splice frame rules.” Each exon...
3.6K
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...
15.3K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
7.0K