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Section 1

Eukaryotic Origins

Book Version 32
By Boundless
Boundless Biology
Biology
by Boundless
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5 concepts
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Early Eukaryotes

Protists are eukaryotes that first appeared approximately 2 billion years ago with the rise of atmospheric oxygen levels.

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Characteristics of Eukaryotic DNA

Eukaryotes, having probably evolved from prokaryotes, have more complex traits in both cell and DNA organization.

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Endosymbiosis and the Evolution of Eukaryotes

Eukaryotes may have been a product of one cell engulfing another and evolving over time until the separate cells became a single organism.

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The Evolution of Mitochondria

Mitochondria are energy-producing organelles that are thought to have once been a type of free-living alpha-proteobacterium.

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The Evolution of Plastids

Plastids may derive from cyanobacteria engulfed via endosymbiosis by early eukaryotes, giving cells the ability to conduct photosynthesis.

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