What's up in
When researchers gave a genetic molecule the ability to replicate, it evolved over time into a complex network of “hosts” and “parasites” that both competed and cooperated to survive.
Was the addition of mitochondria a first step in the formation of complex cells or one of the last? A new study of bacteria tries to answer this contentious question in evolutionary biology.
Traits from RNA molecules passed between multiple generations of worms can work with genetic changes to influence future evolution.
Molecular detective work is zeroing in on the origins of sexual reproduction. The protein tools for cell mergers seem to have long predated sex — so what were they doing?
Large blocks of genes conserved through hundreds of millions of years of evolution hint at how the first animal chromosomes came to be.
Studies that map the adaptive value of viral mutations hint at how the COVID-19 pandemic might progress next.
New studies reveal the ancient, shared genetic “grammar” underpinning the diverse evolution of fish fins and tetrapod limbs.
Get highlights of the most important news delivered to your email inbox