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3D illustration of a reddish pink eukaryotic cell showing its inner contents, including a red and pink nucleus, purple endomembrane system, and pink and red vesicles.
| 3 min read
As eukaryotic cells started to form, eukaryotic traits may have emerged in early cells about one billion years before the introduction of the mitochondria.

phylogeny

<em >Lymantria&nbsp;</em>species make ultrasonic, mechanical rasping noises when they hear bats nearby.&nbsp;

Many Moths Speak Up to Ward Off Bats

The structure of a biological cell (macro)

The Long and Winding Road to Eukaryotic Cells

Illustration showing the path result of Eukaryogenesis

Infographic: Evolutionary Leaps Leading to Modern Eukaryotes

Tree with many scattered branches.

Scientists Resurrect Ancient Rubiscos to Understand Their Evolution

Blue Whales - Sri Lanka April 2012

The Evolutionary Shaping of Modern Whales

Ad&eacute;lie penguin family

Penguins Are Among the World’s Slowest-Evolving Birds: Study

A yellow-orange, translucent artist&#39;s rendition of a yunnanozoan, an ancient wormlike fish, that highlights the arches that make up its cartilage skeleton.

This Simple Fish May Have Been One of the First Vertebrates

scanning electron microscope image of clawlike microscopic organisms on a smoother surface

Phyla of Tiny Filter Feeders Find a New Spot on the Tree of Life

Illustration of a DNA virus sneaking genetic material into a host’s nucleus

Infographic: Possible Mechanisms of Gene Transfer in Eukaryotes

Trending

Illustration of human brain and electroencephalography, signifying brain-computer interfaces.

Brain-Computer Interface Advances Help Reconnect the Mind and Body

Photo of John Calhoun crouches within his rodent utopia-turned-dystopia

Universe 25 Experiment

A woman in her 60s wears a yellow tank top and brown-rimmed glasses while placing a hormone-replacement patch on her upper arm.

Flawed Studies Linked Menopausal Hormone Therapy to Breast Cancer

A man wearing knee-high boots stands in ankle-deep, muddy water at night, holding a wet camera. Dense brine shrimp in the shallow water obscure the thrombolites on the lakebed.

Epic Fail: Sea-Monkeys Sabotage Fieldwork

Multimedia

A photo of a scientist placing the Resipher device on a 96-well plate.

Resipher: Continuous Live-Cell Mitochondrial Respiration Monitoring in 96-Well Plates

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Overcoming Immunotherapy Resistance in Liver Cancer

Overcoming Immunotherapy Resistance in Liver Cancer

Axion Biosystems
August 2026 Digest cover
August 2026

Epic Fail: Sea-Monkeys Sabotage Fieldwork

When Barry Hicks set out to photograph thrombolites, thousands of unexpected visitors photobombed his underwater images.

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Overcoming Immunotherapy Resistance in Liver Cancer

Overcoming Immunotherapy Resistance in Liver Cancer

Axion Biosystems
Optimizing NGS Library Preparation for Reliable Sequencing Data

Optimizing NGS Library Preparation for Reliable Sequencing Data

Covaris
Using TCR Repertoire Sequencing to Advance Immunology Research

Using TCR Repertoire Sequencing to Advance Immunology Research

Miltenyi
Mapping Clonal Mosaicism in Aging Tissues

Mapping Clonal Mosaicism in Aging Tissues

Mission bio

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A photo of a scientist placing the Resipher device on a 96-well plate.

Resipher: Continuous Live-Cell Mitochondrial Respiration Monitoring in 96-Well Plates

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Conceptual image of ice and frost.

The VAULT100 PRO: Inside the most advanced Stirling Ultracold ULT freezer ever built.

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