Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Migration00:53

Migration

9.0K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
9.0K
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

7.9K
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...
7.9K
Position-effect Variegation02:32

Position-effect Variegation

7.2K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.2K
Cis-regulatory Sequences02:02

Cis-regulatory Sequences

12.1K
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
12.1K
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

1.5K
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
1.5K
Gene Flow02:39

Gene Flow

38.6K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
38.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Genome-wide cline analysis identifies new locus contributing to a barrier to gene flow across an Antirrhinum hybrid zone.

PLoS genetics·2026
Same author

Common Chiffchaffs (Phylloscopus collybita) Diverge in a Genomic Region Associated With Migration Differences in Willow Warblers (Phylloscopus trochilus).

Molecular ecology·2026
Same author

The genome sequence of the Spotted Sulphur, <i>Emmelia trabealis</i> (Scopoli, 1763) (Lepidoptera: Noctuidae).

Wellcome open research·2026
Same author

The genome sequence of the Woodland Grayling, <i>Hipparchia fagi</i> (Scopoli, 1763) (Lepidoptera: Nymphalidae).

Wellcome open research·2026
Same author

The genome sequence of the Portuguese Dappled White, <i>Euchloe tagis</i> (Hübner, 1804) (Lepidoptera: Pieridae).

Wellcome open research·2026
Same author

DNA Barcode Reference Library for European Ants: A Roadmap for Phylogeography and Species Discovery.

Molecular ecology resources·2026

相关实验视频

Updated: Mar 10, 2026

In situ Protocol for Butterfly Pupal Wings Using Riboprobes
06:19

In situ Protocol for Butterfly Pupal Wings Using Riboprobes

Published on: May 28, 2007

11.5K

资源的可用性调节基因表达跨生命阶段在一个迁徙的蝶.

D Shipilina1, L Höök1, K Näsvall1,2

  • 1Evolutionary Biology Program, Department of Ecology and Genetics (IEG), Uppsala University, Uppsala, Sweden.

Molecular ecology
|March 9, 2026
PubMed
概括

环境线索通过改变基因表达来塑造蝶的迁徙和繁殖. 资源的可用性对幼虫的发育和成人的特征都有影响,新陈代谢将这些阶段联系起来,并影响迁徙行为.

关键词:
瓦妮莎·卡尔杜伊 (Vanessa Cardui) 是一个蝶的迁徙 蝶的迁徙环境问题 环境问题基因表达的基因表达方式移民综合征是什么意思

更多相关视频

Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans
09:23

Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans

Published on: August 16, 2017

8.6K
An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus
12:10

An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus

Published on: November 30, 2014

13.9K

相关实验视频

Last Updated: Mar 10, 2026

In situ Protocol for Butterfly Pupal Wings Using Riboprobes
06:19

In situ Protocol for Butterfly Pupal Wings Using Riboprobes

Published on: May 28, 2007

11.5K
Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans
09:23

Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans

Published on: August 16, 2017

8.6K
An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus
12:10

An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus

Published on: November 30, 2014

13.9K

科学领域:

  • * 进化生物学 进化生物学
  • * 分子生态学 * 分子生态学
  • * 昆虫生理学 昆虫生理学

背景情况:

  • *自然种群必须在季节性变化中平衡生存和繁殖的资源分配.
  • *在昆虫的迁移和繁殖之间存在着已知的权衡,但监管途径仍然不清楚.
  • *了解这些通路对于解释昆虫的迁徙行为和适应至关重要.

研究的目的:

  • * 为了研究与资源可用性相关的环境线索如何影响长途移徙蝶Vanessa cardui在发育过程中的基因转录.
  • * 确定在迁移和繁殖之间的权衡背后的分子机制.
  • *将环境背景与跨越发展阶段的迁徙行为的分子基础联系起来.

主要方法:

  • * 采用了多个cue,发育阶段特定的实验设计.
  • * 成年Vanessa cardui雌性暴露于宿主植物的存在或缺席.
  • *幼虫经历了食物限制或拥挤的受控条件.

主要成果:

  • *成年人接触宿主植物改变了生态类固醇和青少年激素通路的表达,表明内分泌调节生殖和飞行.
  • *幼虫资源的限制影响了发育和代谢途径,这表明对成年特征的延续效应.
  • *新陈代谢成为关键的分子途径,将不同生命阶段的转录反应联系起来.

结论:

  • * 资源驱动的环境线索诱导Vanessa cardui的特定阶段和一般转录变化.
  • *这些转录签名将环境条件与迁徙行为的分子支柱联系起来.
  • *这些发现提供了关于迁徙昆虫中 oogenesis-flight综合征的内分泌和代谢调节的见解.