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Updated: Nov 18, 2025

Expression of Fluorescent Proteins in Branchiostoma lanceolatum by mRNA Injection into Unfertilized Oocytes
09:31

Expression of Fluorescent Proteins in Branchiostoma lanceolatum by mRNA Injection into Unfertilized Oocytes

Published on: January 12, 2015

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アフリカ の 肺 魚 の ゲノム は,脊椎動物 の 水 から 陸 へ の 移行 に つい て 解明 する

Kun Wang1, Jun Wang2, Chenglong Zhu3

  • 1School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710072, China.

Cell
|February 5, 2021
PubMed
まとめ

肺魚のゲノムは これまでで最大のもので 魚から人間への進化の 適応を明らかにしています この研究は地球上の生命の重要な遺伝子と 規制要素を解読します

キーワード:
評価する祖先のカリオタイプ抗不安作用がある巨大なゲノムサイズ肺魚ペンタダクティル喉の改造肺表面活性剤水から陸への移行

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The Colonization of Land02:22

The Colonization of Land

Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
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In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
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When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
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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.
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