Vasopressin and a hormone called oxytocin evolved from a single primordial neurohypophyseal hormone called vasotocin, which is present in lower vertebrates.
Also, as noted in this section, this identity implies that all organisms on Earth are evolved from a single instance of the origin of life.
But the human from whom the single-cell cancer cells were taken had, of course, evolved from a single cell 3.5 billion years ago.
"The core of our business is still prime time," said Zenkel, even as NBC's Olympic coverage has evolved from a single broadcast network to multiple networks and to multiple networks and streaming.
The team then created a family tree of how these various clones evolved from a single clone.
A genetic analysis may have solved the riddle: They all evolved from a single group that arrived by sea.
As noted by Rogers (2011), such "[p]hylogenetic pattern is everywhere in nature", and "makes sense only if all living things evolved from a single ancestor" (p. 31).
In recent years, the state of computing has evolved from a single CPU into a network of multiprocessors on chip running in parallel at relatively low frequencies.
The scenario differs somewhat from the classic tenet, proposed by Charles Darwin, that all of today's life evolved from a single ancestral form.
But these structures appear to have evolved from a single ancestor a reptile that lived 300 million years ago according to new research.
It also revealed surprises--for instance, that flying squirrels all evolved from a single ancestor and not several, as some had thought.
