Waiting
Login processing...

Trial ends in Request Full Access Tell Your Colleague About Jove
系统发育树
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the…
早期地球的条件
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and…
土地殖民化
Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they…
什么是进化史?
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth…
进化的证据
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the…
化石记录
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most…
趋同进化
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection…
用于全基因组 DNA 分析的超长读数测序
Third generation single-molecule DNA sequencing technologies offer significantly longer read length that can facilitate the assembly of complex…
程序的微生物实验室自适应演化的恒化
Natural evolution involves genetic diversity such as environmental change and a selection between small populations. Adaptive laboratory evolution…
<em>阿斯蒂亚纳克斯</em>胚胎的全原位杂交
In recent years, a draft genome for the blind Mexican cavefish (Astyanax mexicanus) has been released, revealing the sequence identities for…
墨西哥鱼基因功能的操纵
Cave animals provide a compelling system for investigating the evolutionary mechanisms and genetic bases underlying changes in numerous complex…

Get cutting-edge science videos from JoVE sent straight to your inbox every month.

Waiting X
Simple Hit Counter