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Art for "Fragile DNA Enables New Adaptations to Evolve Quickly"

Fragile DNA Enables New Adaptations to Evolve Quickly

If highly repetitive gene-regulating sequences in DNA are easily lost, that may explain why some adaptations evolve quickly and repeatedly.

Photo of the female penis structure of the cave insect Neotrogla aurora.
Abstractions blog

Why Evolution Reversed These Insects’ Sex Organs

Among these cave insects, the females evolved to have penises — twice. The reasons challenge common assumptions about sex.

Abstractions blog

Gene Drives Work in Mice (if They’re Female)

Biologists have demonstrated for the first time that a controversial genetic engineering technology works, with caveats, in mammals.

Art for "How Nearby Stellar Explosions Could Have Killed Off Large Animals"
Abstractions blog

How Nearby Stellar Explosions Could Have Killed Off Large Animals

Subatomic particles called muons are thought to have streamed through the atmosphere and irradiated megafauna like the monster shark megalodon.

Art for "The Brain Maps Out Ideas and Memories Like Spaces"

The Brain Maps Out Ideas and Memories Like Spaces

Emerging evidence suggests that the brain encodes abstract knowledge in the same way that it represents positions in space, which hints at a more universal theory of cognition.

Abstractions blog

Jellyfish Genome Hints That Complexity Isn’t Genetically Complex

Jellyfish didn’t need novel genes to take an evolutionary leap in complexity.

Abstractions blog

Ancient Turing Pattern Builds Feathers, Hair — and Now, Shark Skin

A primordial developmental toolkit shared by all vertebrates, and described by a theory of the mathematician Alan Turing, sets the growth pattern for all types of skin structures.

Biology - abstract illustration
2018 in Review

The Year in Biology

Biologists gained new insights into life’s genomically tumultuous past, viruses as crucial components of life, the hidden talents of complex cells and basic aspects of cognition and memory.

In Theory

How Complex Wholes Emerge From Simple Parts

Throughout nature, throngs of relatively simple elements can self-organize into behaviors that seem unexpectedly complex. Scientists are beginning to understand why and how these phenomena emerge without a central organizing entity.