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相关概念视频

Transgenic Organisms00:53

Transgenic Organisms

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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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Seedless Vascular Plants

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The Angiosperm Life Cycle

Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.

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相关实验视频

Updated: Jul 18, 2026

Generation of Mice Derived from Induced Pluripotent Stem Cells
11:56

Generation of Mice Derived from Induced Pluripotent Stem Cells

Published on: November 29, 2012

从植物到哺乳动物.

M A Matzke, R A Jorgensen

    Science (New York, N.Y.)
    |March 8, 1996
    PubMed
    概括

    No abstract available in PubMed .

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