Life depends on genes being switched on and off at exactly the right time. Even the simplest living organisms do this, but ...

The authors of the study made the discovery by exploring the genomes of many of the oldest branches on the animal family tree, including comb jellies like the 'sea walnut' (Mnemiopsis leidyi ...

Learn about the activation and deactivation of genes over long distances of DNA — an ability that emerged in comb jellies and ...

The authors of the study made the discovery by exploring the genomes of many of the oldest branches on the animal family tree, including comb jellies like the ‘sea walnut’ (Mnemiopsis leidyi), ...

The authors of the study made the discovery by exploring the genomes of many of the oldest branches on the animal family tree, including comb jellies like the ‘sea walnut’ (Mnemiopsis leidyi), ...

Life depends on genes being switched on and off at exactly the right time. Even the simplest living organisms do this, but usually over short ...

This sophisticated genomic mechanism is estimated to have developed from 650 to 700 million years ago, 150 million years ...

The biologist had just come from the first floor, where tanks held a colony of gelatinous comb jellies. The blob was bigger ...

Some develop into tentacles, for example; others become reproductive organs. Comb jellies may be the most ancient living animal. They have a nervous system and—this shocked specialists—two ...

One of the planet’s most notorious invasive species is a comb jelly, Mnemiopsis leidyi. A native of the east coast of North and South America, the comb jelly is capable of eating ten times its ...

Comb jellies, soft-bodied marine creatures that swim by beating rows of cilia, may once have had a hard skeleton. Jef Akst was managing editor of The Scientist, where she started as an intern in 2009 ...