An image of a pair of wild type (left) and mir-193 mutant (right) African squinting bush brown butterflies.
| 4 min read
The vivid wing patterns of butterflies, once attributed to a gene, are now traced to an overlooked microRNA.

evolutionary biology

A human torso with the large bowel depicted in blue and the appendix in red.

What Does the Appendix Do?

a medusa-like jellyfish is shown in front of a black background.

The Origins of Hunger Regulation

A monogenean flatworm

Ecologists Use Museum Specimens to Dig into the Parasitic Past

A Cape ground squirrel sits upright on its hind legs, holding its forelimbs up to its face.

Animals Are Shape-Shifting in Response to a Warming World

Brown-red ants climb over a pile of white translucent larvae and orange pupae. Some use their mandibles to position the larvae.

Ant Pupae Feed Adults, Larvae with Secreted Liquid 

Illustration from the epigenetics and the genome infographic

Infographic: How Epigenetic Marks Can Change the Genome

Cellular DNA and epigenetics

Do Epigenetic Changes Influence Evolution?

Illustration of people dying from the Black Death

Genes that Aided Black Death Survival Linked to Autoimmunity

The structure of a biological cell (macro)

The Long and Winding Road to Eukaryotic Cells

Microscopy image of the cnidarian <em>Hydractinia symbiolongicarpus&nbsp;</em>with cell nuclei stained blue and oocytes stained yellow

Ancient Immunoglobulin Genes Help Cnidarians Decide to Fight or Fuse

Two agar plates superimposed on each other. One is empty while the other is growing multiple different cultured organisms, colored white, beige, and green.

Most Archaea and Bacteria Are Nameless. SeqCode Could Change That

man having grilled beef ribs

Notable Science Quotes

Illustration of RNAs

Infographic: Noncoding RNA in the Brain

Artist&rsquo;s rendition of multiple <em>Neisseria gonorrhoeae</em>, the bacteria that causes gonorrhea, depicted as two spheres stuck together, each covered in tendrils.

Gonorrhea-Blocking Mutation Also Protects Against Alzheimer’s: Study

Ad&eacute;lie penguin family

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

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

Infographic: Possible Mechanisms of Gene Transfer in Eukaryotes

Cow image

Slideshow: Examples of Eukaryotic Horizontal Gene Transfer

Landscape illustration

Horizontal Gene Transfer Happens More Often Than Anyone Thought

Pufferfish underwater in ocean

Pufferfish Don’t Need Functional Stomach, Inflate Instead

early giraffe relative at the bottom and modern giraffes at top

“Necks for Sex” May Explain Giraffes’ Distinctive Anatomy 

Page 1 of 17 - 322 Total Items

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An infant thinking and possibly forming memories.

Babies Form Memories. Why Do Adults Forget Them?   

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

Universe 25 Experiment

Hands facing opposite directions emerge from the back of a person’s head.

Severance versus Science: The Neuroscience of Split-Brain Syndrome

An illustration of the human intestinal microbiota. Hypoxic guts can help avoid fungal blooms post antibiotic treatment.

Hypoxia Makes the Gut Healthy

Multimedia

Stem Cell Strategies for Skin Repair

Stem Cell Strategies for Skin Repair

Taconic Biosciences
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BRAND® Dispensette® S Bottle Top Dispensers for Precise and Safe Reagent Dispensing

A greyscale image of cells dividing.
March 2025, Issue 1

How Do Embryos Know How Fast to Develop

In mammals, intracellular clocks begin to tick within days of fertilization.

View this Issue
Stem Cell Strategies for Skin Repair

Stem Cell Strategies for Skin Repair

iStock: Ifongdesign

The Advent of Automated and AI-Driven Benchwork

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Discover the history, mechanics, and potential of PCR.

Become a PCR Pro

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3D rendered cross section of influenza viruses, showing surface proteins on the outside and single stranded RNA inside the virus

Genetic Insights Break Infectious Pathogen Barriers

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