相关实验视频

Updated: Jul 20, 2025

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

14.0K

在刺腿适应辐射 (Tetragnatha;夏威夷) 中,多条通向重复表型进化的途径

José Cerca1,2,3,4, Darko D Cotoras5,6, Cindy G Santander7

  • 1Berkeley Evolab, Department of Environmental Science, Policy, and Management, UC Berkeley, Berkeley, California, USA.

Molecular ecology
|July 29, 2023
PubMed
概括

在夏威夷,蜘蛛生态形态的重复进化涉及多个过程. 一些通过杂交进化,其他通过新的突变,显示不同的进化路径进化.

关键词:
亚兰尼亚亚是什么意思它们是四角虫类的.祖先共享的多态化.融合进化的趋同.这是一种de novo突变.基因组分歧基因组分歧混合化 混合化 混合化这是一个内进的进攻.平行进化的平行进化.站在基因变异的基因变异.

更多相关视频

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton08:02

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Published on: May 7, 2016

9.9K
Behavioral Tracking and Neuromast Imaging of Mexican Cavefish14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

7.8K

相关概念视频

Speciation Rates01:07

Speciation Rates

Overview
21.3K
The Evidence for Evolution02:55

The Evidence for Evolution

Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
42.9K
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.
27.9K
Limits to Natural Selection01:38

Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
31.4K
Phylogeny01:23

Phylogeny

Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
44.4K
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
40.6K