A unicellular organism ... shows that multicellular coordination and differentiation processes are already present in the species, well before the first animals appeared on Earth,” said Omaya ...

The first life forms to appear on Earth were unicellular, i.e., composed of a single cell, such as yeast or bacteria. Later, animals—multicellular organisms—evolved, developing from a single ...

A single-celled microbe that revels in Earth's most hostile salt lakes has the remarkable ability to transform its mote of a ...

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 distances across the DNA sequence, with the on/off switch ...

Scientists have identified a new species of microscopic worms living in the ground below South African mines, isolated from fracture water gushing up from miles below the Earth's surface. It is the ...

While oxygen-loving organisms evolve in these changing ... long thought by scientists to be the first multicellular animals, had predecessors. Debate continues, however, as to what became of ...