Increasing mitochondrial activity in worms by engineering a light-activated proton pump into the organelle’s membrane extends the animals’ lifespan without evidence of health decline, according to a preprint.

Researchers report they were able to make functional sperm in a dish, a feat previously only possible for mice.

Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.

The color morph’s bright yellow hue and its propensity for skin tumors both likely stem from a gene implicated in a dangerous form of human skin cancer, suggesting the animals could make an ideal model for studying the disease.

While regeneration has long been the domain of colonial tunicates, a solitary species of sea squirt was able to regenerate into multiple, fully functional individuals within a month of being cut up.

The animals adopt the emotional state of their cagemates, and the parts of the brain engaged during the process are different for pain and fear, according to a new study.

The Sloan Kettering researcher used mutagenic screening to probe genes and molecular pathways, including Toll and Hedgehog, essential to development in fruit flies and mice.

Their ability to distinguish between individuals is strong evidence for fast mapping, a learning tool generally thought to belong only to humans.

Enhancers, short regions of DNA that direct gene expression, of species separated by 700 million years of evolution worked interchangeably, according to a new study.

Researchers turn to familiar model animals, along with some fresh strategies, to develop countermeasures against SARS-CoV-2 and investigate the biology of infection.

The scientific community said goodbye to Sydney Brenner, Paul Greengard, Patricia Bath, and a number of other leading researchers this year.

Organisms with unusual genomes are helping scientists investigate gene regulation, evolution, and development.

Fly avatars bearing multiple genetic changes akin to those of a cancer patient lead to a tailor-made treatment that has shrunk the patient’s tumors.

An unusual population of immune cells appears to exist in zebrafish as well as mammals.

Tools for studying how cancer spreads

The domination of model organisms and charismatic megafauna in the literature is a disservice to the life sciences.

Mitochondrial DNA polymerase is necessary for the destruction of paternal mtDNA in fruit fly sperm, scientists show.

Some scientists hope to replace microbiology’s workhorse bacterium with fast-growing Vibrio natriegens.

Why can science still not define this most basic biological process?