Genetics

Microbes

Archaea microbes fold, twist and contort their DNA in extreme ways

Single-celled archaea open and close their Slinky-like genetic material in a clamshell motion, possibly providing easy access to their genes.

Genetics

DNA databases are too white, so genetics doesn’t help everyone. How do we fix that?

A lack of diversity in genetic databases is making precision medicine ineffective for many people. One historian proposes a solution: construct reference genomes for individual populations.

Genetics

The first human genetic blueprint just turned 20. What’s next?

The Human Genome Project led to many medical advances. Deciphering 3 million African genomes and using new tech to fill gaps could lead to even more.

Health & Medicine

Some Neandertal genes in people today may protect against severe COVID-19

Neandertal DNA on chromosome 12 may affect genes involved in a biochemical chain reaction that ends with the destruction of viral RNA.

Genetics

The oldest animal DNA ever recovered reveals mammoths’ evolution

Mammoths evolved to handle the cold over hundreds of thousands of years and North America may been home to a hybrid species, a new study finds.

Plants

Modified genes can distort wild cotton’s interactions with insects

In a Yucatan nature park, engineered genes influence nectar production, affecting ants’ and maybe pollinators’ attraction to the wild cotton plants.

Genetics

Lizard-like tuatara carry two distinct mitochondrial genomes

Having two mitochondrial genetic instruction books, a first for vertebrates, may help explain tuatara’s unique ability to tolerate cold temperatures.

Genetics

Some identical twins don’t have identical DNA

Mutations arising early in development may account for genetic differences between identical twins.

Genetics

Plague may have caused die-offs of ancient Siberians

DNA suggests that the deadly bacterium that causes the plague reached northeast Asia by 4,400 years ago.

Health & Medicine

How some ticks protect themselves from deadly bacteria on human skin

A gene that ticks acquired from bacteria 40 million years ago may help the arachnids keep potential pathogens at bay while feeding on blood.

Genetics

A key to the mystery of fast-evolving genes was found in ‘junk DNA’

A new study challenges a long-held belief that essential genes change little over time.

Genetics

Penicillin allergies may be linked to one immune system gene

Researchers have located a shared hot spot — on the HLA-B gene — in the immune system in people who say they have penicillin allergies.